397130933 has 2 divisors, whose sum is σ = 397130934. Its totient is φ = 397130932.

The previous prime is 397130917. The next prime is 397130941. The reversal of 397130933 is 339031793.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 229764964 + 167365969 = 15158^2 + 12937^2 .

It is a cyclic number.

It is not a de Polignac number, because 397130933 - 2⁴ = 397130917 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (397130963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198565466 + 198565467.

It is an arithmetic number, because the mean of its divisors is an integer number (198565467).

Almost surely, 2^397130933 is an apocalyptic number.

It is an amenable number.

397130933 is a deficient number, since it is larger than the sum of its proper divisors (1).

397130933 is an equidigital number, since it uses as much as digits as its factorization.

397130933 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45927, while the sum is 38.

The square root of 397130933 is about 19928.1442437574. The cubic root of 397130933 is about 735.0404488206.

The spelling of 397130933 in words is "three hundred ninety-seven million, one hundred thirty thousand, nine hundred thirty-three".