390038790 has 32 divisors (see below), whose sum is σ = 942386400. Its totient is φ = 103311104.

The previous prime is 390038773. The next prime is 390038791. The reversal of 390038790 is 97830093.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390038791) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39159 + ... + 48098.

It is an arithmetic number, because the mean of its divisors is an integer number (29449575).

Almost surely, 2^390038790 is an apocalyptic number.

390038790 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

390038790 is an abundant number, since it is smaller than the sum of its proper divisors (552347610).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

390038790 is a wasteful number, since it uses less digits than its factorization.

390038790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87416.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 390038790 is about 19749.3997377135. The cubic root of 390038790 is about 730.6385792793.

The spelling of 390038790 in words is "three hundred ninety million, thirty-eight thousand, seven hundred ninety".