396045931 has 2 divisors, whose sum is σ = 396045932. Its totient is φ = 396045930.

The previous prime is 396045917. The next prime is 396045943. The reversal of 396045931 is 139540693.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 396045931 - 2¹³ = 396037739 is a prime.

It is a super-2 number, since 2×396045931² = 313704758923313522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (396045961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198022965 + 198022966.

It is an arithmetic number, because the mean of its divisors is an integer number (198022966).

Almost surely, 2^396045931 is an apocalyptic number.

396045931 is a deficient number, since it is larger than the sum of its proper divisors (1).

396045931 is an equidigital number, since it uses as much as digits as its factorization.

396045931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 87480, while the sum is 40.

The square root of 396045931 is about 19900.9027684676. The cubic root of 396045931 is about 734.3704365758.

The spelling of 396045931 in words is "three hundred ninety-six million, forty-five thousand, nine hundred thirty-one".