396571927 has 2 divisors, whose sum is σ = 396571928. Its totient is φ = 396571926.

The previous prime is 396571921. The next prime is 396571943. The reversal of 396571927 is 729175693.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-396571927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (396571921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198285963 + 198285964.

It is an arithmetic number, because the mean of its divisors is an integer number (198285964).

Almost surely, 2^396571927 is an apocalyptic number.

396571927 is a deficient number, since it is larger than the sum of its proper divisors (1).

396571927 is an equidigital number, since it uses as much as digits as its factorization.

396571927 is an evil number, because the sum of its binary digits is even.

The product of its digits is 714420, while the sum is 49.

The square root of 396571927 is about 19914.1137638610. The cubic root of 396571927 is about 734.6954031191.

The spelling of 396571927 in words is "three hundred ninety-six million, five hundred seventy-one thousand, nine hundred twenty-seven".