397433233 has 2 divisors, whose sum is σ = 397433234. Its totient is φ = 397433232.

The previous prime is 397433209. The next prime is 397433251. The reversal of 397433233 is 332334793.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 310887424 + 86545809 = 17632^2 + 9303^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-397433233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 397433192 and 397433201.

It is not a weakly prime, because it can be changed into another prime (397533233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198716616 + 198716617.

It is an arithmetic number, because the mean of its divisors is an integer number (198716617).

Almost surely, 2^397433233 is an apocalyptic number.

It is an amenable number.

397433233 is a deficient number, since it is larger than the sum of its proper divisors (1).

397433233 is an equidigital number, since it uses as much as digits as its factorization.

397433233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122472, while the sum is 37.

The square root of 397433233 is about 19935.7275513085. The cubic root of 397433233 is about 735.2269082072.

The spelling of 397433233 in words is "three hundred ninety-seven million, four hundred thirty-three thousand, two hundred thirty-three".