397958567 has 2 divisors, whose sum is σ = 397958568. Its totient is φ = 397958566.

The previous prime is 397958557. The next prime is 397958579. The reversal of 397958567 is 765859793.

It is a weak prime.

It is an emirp because it is prime and its reverse (765859793) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 397958567 - 2¹⁰ = 397957543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (397958557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198979283 + 198979284.

It is an arithmetic number, because the mean of its divisors is an integer number (198979284).

Almost surely, 2^397958567 is an apocalyptic number.

397958567 is a deficient number, since it is larger than the sum of its proper divisors (1).

397958567 is an equidigital number, since it uses as much as digits as its factorization.

397958567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14288400, while the sum is 59.

The square root of 397958567 is about 19948.8988919188. The cubic root of 397958567 is about 735.5507107196.

The spelling of 397958567 in words is "three hundred ninety-seven million, nine hundred fifty-eight thousand, five hundred sixty-seven".