479688557 has 2 divisors, whose sum is σ = 479688558. Its totient is φ = 479688556.

The previous prime is 479688511. The next prime is 479688581. The reversal of 479688557 is 755886974.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 467813641 + 11874916 = 21629^2 + 3446^2 .

It is a cyclic number.

It is not a de Polignac number, because 479688557 - 2⁶ = 479688493 is a prime.

It is a super-2 number, since 2×479688557² = 460202223433484498, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 479688496 and 479688505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (479681557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239844278 + 239844279.

It is an arithmetic number, because the mean of its divisors is an integer number (239844279).

Almost surely, 2^479688557 is an apocalyptic number.

It is an amenable number.

479688557 is a deficient number, since it is larger than the sum of its proper divisors (1).

479688557 is an equidigital number, since it uses as much as digits as its factorization.

479688557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16934400, while the sum is 59.

The square root of 479688557 is about 21901.7934653763. The cubic root of 479688557 is about 782.8041501895.

The spelling of 479688557 in words is "four hundred seventy-nine million, six hundred eighty-eight thousand, five hundred fifty-seven".