479690657 has 4 divisors (see below), whose sum is σ = 479738160. Its totient is φ = 479643156.

The previous prime is 479690647. The next prime is 479690723. The reversal of 479690657 is 756096974.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 756096974 = 2 ⋅378048487.

It is a cyclic number.

It is not a de Polignac number, because 479690657 - 2⁸ = 479690401 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 479690599 and 479690608.

It is not an unprimeable number, because it can be changed into a prime (479690647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1907 + ... + 31032.

It is an arithmetic number, because the mean of its divisors is an integer number (119934540).

Almost surely, 2^479690657 is an apocalyptic number.

It is an amenable number.

479690657 is a deficient number, since it is larger than the sum of its proper divisors (47503).

479690657 is a wasteful number, since it uses less digits than its factorization.

479690657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47502.

The product of its (nonzero) digits is 2857680, while the sum is 53.

The square root of 479690657 is about 21901.8414066032. The cubic root of 479690657 is about 782.8052925184.

The spelling of 479690657 in words is "four hundred seventy-nine million, six hundred ninety thousand, six hundred fifty-seven".