479432857 has 2 divisors, whose sum is σ = 479432858. Its totient is φ = 479432856.

The previous prime is 479432839. The next prime is 479432911. The reversal of 479432857 is 758234974.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 414081801 + 65351056 = 20349^2 + 8084^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-479432857 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 479432857.

It is not a weakly prime, because it can be changed into another prime (479438857) 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 as a sum of consecutive naturals, namely, 239716428 + 239716429.

It is an arithmetic number, because the mean of its divisors is an integer number (239716429).

Almost surely, 2^479432857 is an apocalyptic number.

It is an amenable number.

479432857 is a deficient number, since it is larger than the sum of its proper divisors (1).

479432857 is an equidigital number, since it uses as much as digits as its factorization.

479432857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1693440, while the sum is 49.

The square root of 479432857 is about 21895.9552657563. The cubic root of 479432857 is about 782.6650331209.

The spelling of 479432857 in words is "four hundred seventy-nine million, four hundred thirty-two thousand, eight hundred fifty-seven".