390908933 has 8 divisors (see below), whose sum is σ = 396255552. Its totient is φ = 385589376.

The previous prime is 390908929. The next prime is 390908953. The reversal of 390908933 is 339809093.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 390908933 - 2² = 390908929 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390908953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23216 + ... + 36342.

It is an arithmetic number, because the mean of its divisors is an integer number (49531944).

Almost surely, 2^390908933 is an apocalyptic number.

It is an amenable number.

390908933 is a deficient number, since it is larger than the sum of its proper divisors (5346619).

390908933 is a wasteful number, since it uses less digits than its factorization.

390908933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13531.

The product of its (nonzero) digits is 157464, while the sum is 44.

The square root of 390908933 is about 19771.4170711156. The cubic root of 390908933 is about 731.1815063516.

The spelling of 390908933 in words is "three hundred ninety million, nine hundred eight thousand, nine hundred thirty-three".