397583238791 has 2 divisors, whose sum is σ = 397583238792. Its totient is φ = 397583238790.

The previous prime is 397583238781. The next prime is 397583238859. The reversal of 397583238791 is 197832385793.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 397583238791 - 2⁶ = 397583238727 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (397583238781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198791619395 + 198791619396.

It is an arithmetic number, because the mean of its divisors is an integer number (198791619396).

Almost surely, 2^397583238791 is an apocalyptic number.

397583238791 is a deficient number, since it is larger than the sum of its proper divisors (1).

397583238791 is an equidigital number, since it uses as much as digits as its factorization.

397583238791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68584320, while the sum is 65.

The spelling of 397583238791 in words is "three hundred ninety-seven billion, five hundred eighty-three million, two hundred thirty-eight thousand, seven hundred ninety-one".