396913939 has 2 divisors, whose sum is σ = 396913940. Its totient is φ = 396913938.

The previous prime is 396913931. The next prime is 396913949. The reversal of 396913939 is 939319693.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 396913939 - 2³ = 396913931 is a prime.

It is not a weakly prime, because it can be changed into another prime (396913931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198456969 + 198456970.

It is an arithmetic number, because the mean of its divisors is an integer number (198456970).

Almost surely, 2^396913939 is an apocalyptic number.

396913939 is a deficient number, since it is larger than the sum of its proper divisors (1).

396913939 is an equidigital number, since it uses as much as digits as its factorization.

396913939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1062882, while the sum is 52.

The square root of 396913939 is about 19922.6990892299. The cubic root of 396913939 is about 734.9065480395.

The spelling of 396913939 in words is "three hundred ninety-six million, nine hundred thirteen thousand, nine hundred thirty-nine".