396627331 has 2 divisors, whose sum is σ = 396627332. Its totient is φ = 396627330.

The previous prime is 396627311. The next prime is 396627349. The reversal of 396627331 is 133726693.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-396627331 is a prime.

It is a super-2 number, since 2×396627331² = 314626479392367122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (396627311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198313665 + 198313666.

It is an arithmetic number, because the mean of its divisors is an integer number (198313666).

Almost surely, 2^396627331 is an apocalyptic number.

396627331 is a deficient number, since it is larger than the sum of its proper divisors (1).

396627331 is an equidigital number, since it uses as much as digits as its factorization.

396627331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 122472, while the sum is 40.

The square root of 396627331 is about 19915.5047889829. The cubic root of 396627331 is about 734.7296156338.

The spelling of 396627331 in words is "three hundred ninety-six million, six hundred twenty-seven thousand, three hundred thirty-one".