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90004669 = 505917791
BaseRepresentation
bin1010101110101…
…01110010111101
320021100201012021
411113111302331
5141020122134
612533040141
72142012166
oct527256275
9207321167
1090004669
1146894927
1226186051
1315854101
14bd4c76d
157d7d0b4
hex55d5cbd

90004669 has 4 divisors (see below), whose sum is σ = 90027520. Its totient is φ = 89981820.

The previous prime is 90004667. The next prime is 90004697. The reversal of 90004669 is 96640009.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 90004669 - 21 = 90004667 is a prime.

It is a super-2 number, since 2×900046692 = 16201680883599122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90004667) 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 3 ways as a sum of consecutive naturals, for example, 3837 + ... + 13954.

It is an arithmetic number, because the mean of its divisors is an integer number (22506880).

Almost surely, 290004669 is an apocalyptic number.

It is an amenable number.

90004669 is a deficient number, since it is larger than the sum of its proper divisors (22851).

90004669 is a wasteful number, since it uses less digits than its factorization.

90004669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22850.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 90004669 is about 9487.0790552203. The cubic root of 90004669 is about 448.1482240324.

The spelling of 90004669 in words is "ninety million, four thousand, six hundred sixty-nine".

Divisors: 1 5059 17791 90004669