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479140881 = 31917191163
BaseRepresentation
bin11100100011110…
…001110000010001
31020101120212201120
4130203301300101
51440130002011
6115313352453
714605426122
oct3443616021
91211525646
10479140881
1122650a6aa
12114568729
137836091b
14478c6049
152c0e7a06
hex1c8f1c11

479140881 has 16 divisors (see below), whose sum is σ = 643645440. Its totient is φ = 317040080.

The previous prime is 479140819. The next prime is 479140891. The reversal of 479140881 is 188041974.

It is a cyclic number.

It is not a de Polignac number, because 479140881 - 214 = 479124497 is a prime.

It is a super-2 number, since 2×4791408812 = 459151967690912322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (479140891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 411406 + ... + 412568.

It is an arithmetic number, because the mean of its divisors is an integer number (40227840).

Almost surely, 2479140881 is an apocalyptic number.

It is an amenable number.

479140881 is a deficient number, since it is larger than the sum of its proper divisors (164504559).

479140881 is a wasteful number, since it uses less digits than its factorization.

479140881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2076.

The product of its (nonzero) digits is 64512, while the sum is 42.

The square root of 479140881 is about 21889.2869002167. The cubic root of 479140881 is about 782.5061190987.

The spelling of 479140881 in words is "four hundred seventy-nine million, one hundred forty thousand, eight hundred eighty-one".

Divisors: 1 3 191 573 719 1163 2157 3489 137329 222133 411987 666399 836197 2508591 159713627 479140881