390332497 has 2 divisors, whose sum is σ = 390332498. Its totient is φ = 390332496.

The previous prime is 390332417. The next prime is 390332519. The reversal of 390332497 is 794233093.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 368793616 + 21538881 = 19204^2 + 4641^2 .

It is a cyclic number.

It is not a de Polignac number, because 390332497 - 2²⁷ = 256114769 is a prime.

It is not a weakly prime, because it can be changed into another prime (390332417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195166248 + 195166249.

It is an arithmetic number, because the mean of its divisors is an integer number (195166249).

Almost surely, 2^390332497 is an apocalyptic number.

It is an amenable number.

390332497 is a deficient number, since it is larger than the sum of its proper divisors (1).

390332497 is an equidigital number, since it uses as much as digits as its factorization.

390332497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 122472, while the sum is 40.

The square root of 390332497 is about 19756.8341846562. The cubic root of 390332497 is about 730.8219284134.

The spelling of 390332497 in words is "three hundred ninety million, three hundred thirty-two thousand, four hundred ninety-seven".