390044988 has 36 divisors (see below), whose sum is σ = 1002663480. Its totient is φ = 127810656.

The previous prime is 390044969. The next prime is 390045011. The reversal of 390044988 is 889440093.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89695 + ... + 93942.

Almost surely, 2^390044988 is an apocalyptic number.

It is an amenable number.

390044988 is an abundant number, since it is smaller than the sum of its proper divisors (612618492).

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

390044988 is a wasteful number, since it uses less digits than its factorization.

390044988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183706 (or 183701 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 390044988 is about 19749.5566532517. The cubic root of 390044988 is about 730.6424493849.

The spelling of 390044988 in words is "three hundred ninety million, forty-four thousand, nine hundred eighty-eight".