397017079 has 2 divisors, whose sum is σ = 397017080. Its totient is φ = 397017078.

The previous prime is 397017073. The next prime is 397017083. The reversal of 397017079 is 970710793.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 397017079 - 2²¹ = 394919927 is a prime.

It is a super-2 number, since 2×397017079² = 315245122035384482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (397017073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198508539 + 198508540.

It is an arithmetic number, because the mean of its divisors is an integer number (198508540).

Almost surely, 2^397017079 is an apocalyptic number.

397017079 is a deficient number, since it is larger than the sum of its proper divisors (1).

397017079 is an equidigital number, since it uses as much as digits as its factorization.

397017079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 83349, while the sum is 43.

The square root of 397017079 is about 19925.2874257813. The cubic root of 397017079 is about 734.9701988627.

The spelling of 397017079 in words is "three hundred ninety-seven million, seventeen thousand, seventy-nine".