397607659 has 2 divisors, whose sum is σ = 397607660. Its totient is φ = 397607658.

The previous prime is 397607657. The next prime is 397607671. The reversal of 397607659 is 956706793.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 397607659 - 2¹ = 397607657 is a prime.

Together with 397607657, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (397607653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198803829 + 198803830.

It is an arithmetic number, because the mean of its divisors is an integer number (198803830).

Almost surely, 2^397607659 is an apocalyptic number.

397607659 is a deficient number, since it is larger than the sum of its proper divisors (1).

397607659 is an equidigital number, since it uses as much as digits as its factorization.

397607659 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2143260, while the sum is 52.

The square root of 397607659 is about 19940.1017800813. The cubic root of 397607659 is about 735.3344515810.

The spelling of 397607659 in words is "three hundred ninety-seven million, six hundred seven thousand, six hundred fifty-nine".