393157201 has 2 divisors, whose sum is σ = 393157202. Its totient is φ = 393157200.

The previous prime is 393157183. The next prime is 393157207. The reversal of 393157201 is 102751393.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201611601 + 191545600 = 14199^2 + 13840^2 .

It is a cyclic number.

It is not a de Polignac number, because 393157201 - 2⁵ = 393157169 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (393157207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 196578600 + 196578601.

It is an arithmetic number, because the mean of its divisors is an integer number (196578601).

Almost surely, 2^393157201 is an apocalyptic number.

It is an amenable number.

393157201 is a deficient number, since it is larger than the sum of its proper divisors (1).

393157201 is an equidigital number, since it uses as much as digits as its factorization.

393157201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5670, while the sum is 31.

The square root of 393157201 is about 19828.1920759307. The cubic root of 393157201 is about 732.5805964581.

The spelling of 393157201 in words is "three hundred ninety-three million, one hundred fifty-seven thousand, two hundred one".