397616579 has 2 divisors, whose sum is σ = 397616580. Its totient is φ = 397616578.

The previous prime is 397616573. The next prime is 397616599. The reversal of 397616579 is 975616793.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 397616579 - 2¹⁶ = 397551043 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 397616579.

It is not a weakly prime, because it can be changed into another prime (397616573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198808289 + 198808290.

It is an arithmetic number, because the mean of its divisors is an integer number (198808290).

Almost surely, 2^397616579 is an apocalyptic number.

397616579 is a deficient number, since it is larger than the sum of its proper divisors (1).

397616579 is an equidigital number, since it uses as much as digits as its factorization.

397616579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2143260, while the sum is 53.

The square root of 397616579 is about 19940.3254486982. The cubic root of 397616579 is about 735.3399504139.

The spelling of 397616579 in words is "three hundred ninety-seven million, six hundred sixteen thousand, five hundred seventy-nine".