390221337 has 8 divisors (see below), whose sum is σ = 567594720. Its totient is φ = 236497760.

The previous prime is 390221327. The next prime is 390221357. The reversal of 390221337 is 733122093.

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 390221337 - 2⁸ = 390221081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (390221327) 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, 5912412 + ... + 5912477.

It is an arithmetic number, because the mean of its divisors is an integer number (70949340).

Almost surely, 2^390221337 is an apocalyptic number.

It is an amenable number.

390221337 is a deficient number, since it is larger than the sum of its proper divisors (177373383).

390221337 is a wasteful number, since it uses less digits than its factorization.

390221337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11824903.

The product of its (nonzero) digits is 6804, while the sum is 30.

The square root of 390221337 is about 19754.0207805905. The cubic root of 390221337 is about 730.7525466435.

The spelling of 390221337 in words is "three hundred ninety million, two hundred twenty-one thousand, three hundred thirty-seven".