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8469104981 = 4723833909
BaseRepresentation
bin1111110001100110…
…00100100101010101
3210212020010002221212
413320303010211111
5114321042324411
63520214151205
7416605130111
oct77063044525
923766102855
108469104981
113656652a17
121784352505
13a4c79ba2c
145a4ada741
153487ae68b
hex1f8cc4955

8469104981 has 6 divisors (see below), whose sum is σ = 8653134870. Its totient is φ = 8288909096.

The previous prime is 8469104957. The next prime is 8469105031. The reversal of 8469104981 is 1894019648.

It can be written as a sum of positive squares in only one way, i.e., 7535802481 + 933302500 = 86809^2 + 30550^2 .

It is not a de Polignac number, because 8469104981 - 210 = 8469103957 is a prime.

It is a super-2 number, since 2×84691049812 (a number of 21 digits) 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 (8469104921) 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 5 ways as a sum of consecutive naturals, for example, 1914746 + ... + 1919163.

It is an arithmetic number, because the mean of its divisors is an integer number (1442189145).

Almost surely, 28469104981 is an apocalyptic number.

It is an amenable number.

8469104981 is a deficient number, since it is larger than the sum of its proper divisors (184029889).

8469104981 is an equidigital number, since it uses as much as digits as its factorization.

8469104981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3834003 (or 3833956 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 50.

The square root of 8469104981 is about 92027.7402797656. The cubic root of 8469104981 is about 2038.3519450079.

The spelling of 8469104981 in words is "eight billion, four hundred sixty-nine million, one hundred four thousand, nine hundred eighty-one".

Divisors: 1 47 2209 3833909 180193723 8469104981