404157613 has 2 divisors, whose sum is σ = 404157614. Its totient is φ = 404157612.

The previous prime is 404157599. The next prime is 404157703. The reversal of 404157613 is 316751404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 341399529 + 62758084 = 18477^2 + 7922^2 .

It is a cyclic number.

It is not a de Polignac number, because 404157613 - 2⁹ = 404157101 is a prime.

It is a super-2 number, since 2×404157613² = 326686752291715538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404157713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202078806 + 202078807.

It is an arithmetic number, because the mean of its divisors is an integer number (202078807).

Almost surely, 2^404157613 is an apocalyptic number.

It is an amenable number.

404157613 is a deficient number, since it is larger than the sum of its proper divisors (1).

404157613 is an equidigital number, since it uses as much as digits as its factorization.

404157613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 404157613 is about 20103.6716298292. The cubic root of 404157613 is about 739.3503020427.

The spelling of 404157613 in words is "four hundred four million, one hundred fifty-seven thousand, six hundred thirteen".