390444042 has 32 divisors (see below), whose sum is σ = 812180160. Its totient is φ = 125032320.

The previous prime is 390444029. The next prime is 390444071. The reversal of 390444042 is 240444093.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3334 + ... + 28142.

It is an arithmetic number, because the mean of its divisors is an integer number (25380630).

Almost surely, 2^390444042 is an apocalyptic number.

390444042 is an abundant number, since it is smaller than the sum of its proper divisors (421736118).

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

390444042 is a wasteful number, since it uses less digits than its factorization.

390444042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24918.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 390444042 is about 19759.6569302202. The cubic root of 390444042 is about 730.8915372457.

The spelling of 390444042 in words is "three hundred ninety million, four hundred forty-four thousand, forty-two".