396913859 has 2 divisors, whose sum is σ = 396913860. Its totient is φ = 396913858.

The previous prime is 396913849. The next prime is 396913871. The reversal of 396913859 is 958319693.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 396913859 - 2⁴ = 396913843 is a prime.

It is a super-2 number, since 2×396913859² = 315081222932543762, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 396913859.

It is not a weakly prime, because it can be changed into another prime (396913849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198456929 + 198456930.

It is an arithmetic number, because the mean of its divisors is an integer number (198456930).

Almost surely, 2^396913859 is an apocalyptic number.

396913859 is a deficient number, since it is larger than the sum of its proper divisors (1).

396913859 is an equidigital number, since it uses as much as digits as its factorization.

396913859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1574640, while the sum is 53.

The square root of 396913859 is about 19922.6970814697. The cubic root of 396913859 is about 734.9064986648.

The spelling of 396913859 in words is "three hundred ninety-six million, nine hundred thirteen thousand, eight hundred fifty-nine".