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4287894669 = 322325316993
BaseRepresentation
bin1111111110010100…
…0001010010001101
3102001211102121200200
43333211001102031
532240200112134
61545252244113
7211154334432
oct37745012215
912054377620
104287894669
11190044a803
129b8010639
135344715a6
142c9695b89
151a1692499
hexff94148d

4287894669 has 36 divisors (see below), whose sum is σ = 6597172764. Its totient is φ = 2682561024.

The previous prime is 4287894661. The next prime is 4287894671. The reversal of 4287894669 is 9664987824.

It can be written as a sum of positive squares in 2 ways, for example, as 1771568100 + 2516326569 = 42090^2 + 50163^2 .

It is not a de Polignac number, because 4287894669 - 23 = 4287894661 is a prime.

It is a super-2 number, since 2×42878946692 = 36772081384877239122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4287894661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 243837 + ... + 260829.

It is an arithmetic number, because the mean of its divisors is an integer number (183254799).

Almost surely, 24287894669 is an apocalyptic number.

It is an amenable number.

4287894669 is a deficient number, since it is larger than the sum of its proper divisors (2309278095).

4287894669 is a wasteful number, since it uses less digits than its factorization.

4287894669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17098 (or 17072 counting only the distinct ones).

The product of its digits is 41803776, while the sum is 63.

The square root of 4287894669 is about 65482.0179056816. The cubic root of 4287894669 is about 1624.6059376153.

The spelling of 4287894669 in words is "four billion, two hundred eighty-seven million, eight hundred ninety-four thousand, six hundred sixty-nine".

Divisors: 1 3 9 23 53 69 159 207 477 529 1219 1587 3657 4761 10971 16993 28037 50979 84111 152937 252333 390839 900629 1172517 2701887 3517551 8105661 8989297 20714467 26967891 62143401 80903673 186430203 476432741 1429298223 4287894669