396897719 has 2 divisors, whose sum is σ = 396897720. Its totient is φ = 396897718.

The previous prime is 396897703. The next prime is 396897769. The reversal of 396897719 is 917798693.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 396897719 - 2⁴ = 396897703 is a prime.

It is a super-2 number, since 2×396897719² = 315055598694805922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (396897769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198448859 + 198448860.

It is an arithmetic number, because the mean of its divisors is an integer number (198448860).

Almost surely, 2^396897719 is an apocalyptic number.

396897719 is a deficient number, since it is larger than the sum of its proper divisors (1).

396897719 is an equidigital number, since it uses as much as digits as its factorization.

396897719 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5143824, while the sum is 59.

The square root of 396897719 is about 19922.2920117139. The cubic root of 396897719 is about 734.8965371821.

The spelling of 396897719 in words is "three hundred ninety-six million, eight hundred ninety-seven thousand, seven hundred nineteen".