390492131 has 2 divisors, whose sum is σ = 390492132. Its totient is φ = 390492130.

The previous prime is 390492103. The next prime is 390492169. The reversal of 390492131 is 131294093.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-390492131 is a prime.

It is a super-2 number, since 2×390492131² = 304968208745842322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (390452131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195246065 + 195246066.

It is an arithmetic number, because the mean of its divisors is an integer number (195246066).

Almost surely, 2^390492131 is an apocalyptic number.

390492131 is a deficient number, since it is larger than the sum of its proper divisors (1).

390492131 is an equidigital number, since it uses as much as digits as its factorization.

390492131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 390492131 is about 19760.8737408041. The cubic root of 390492131 is about 730.9215427407.

The spelling of 390492131 in words is "three hundred ninety million, four hundred ninety-two thousand, one hundred thirty-one".