390470933 has 2 divisors, whose sum is σ = 390470934. Its totient is φ = 390470932.

The previous prime is 390470887. The next prime is 390470939. The reversal of 390470933 is 339074093.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 324828529 + 65642404 = 18023^2 + 8102^2 .

It is a cyclic number.

It is not a de Polignac number, because 390470933 - 2⁶ = 390470869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (390470939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195235466 + 195235467.

It is an arithmetic number, because the mean of its divisors is an integer number (195235467).

Almost surely, 2^390470933 is an apocalyptic number.

It is an amenable number.

390470933 is a deficient number, since it is larger than the sum of its proper divisors (1).

390470933 is an equidigital number, since it uses as much as digits as its factorization.

390470933 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61236, while the sum is 38.

The square root of 390470933 is about 19760.3373706017. The cubic root of 390470933 is about 730.9083163920.

The spelling of 390470933 in words is "three hundred ninety million, four hundred seventy thousand, nine hundred thirty-three".