397497713 has 2 divisors, whose sum is σ = 397497714. Its totient is φ = 397497712.

The previous prime is 397497677. The next prime is 397497739. The reversal of 397497713 is 317794793.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 331676944 + 65820769 = 18212^2 + 8113^2 .

It is a cyclic number.

It is not a de Polignac number, because 397497713 - 2¹⁰ = 397496689 is a prime.

It is not a weakly prime, because it can be changed into another prime (397497313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198748856 + 198748857.

It is an arithmetic number, because the mean of its divisors is an integer number (198748857).

Almost surely, 2^397497713 is an apocalyptic number.

It is an amenable number.

397497713 is a deficient number, since it is larger than the sum of its proper divisors (1).

397497713 is an equidigital number, since it uses as much as digits as its factorization.

397497713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1000188, while the sum is 50.

The square root of 397497713 is about 19937.3446827806. The cubic root of 397497713 is about 735.2666673949.

The spelling of 397497713 in words is "three hundred ninety-seven million, four hundred ninety-seven thousand, seven hundred thirteen".