390021112 has 16 divisors (see below), whose sum is σ = 787542840. Its totient is φ = 180009696.

The previous prime is 390021103. The next prime is 390021133. The reversal of 390021112 is 211120093.

It is a self number, because there is not a number n which added to its sum of digits gives 390021112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1874998 + ... + 1875205.

Almost surely, 2^390021112 is an apocalyptic number.

It is an amenable number.

390021112 is an abundant number, since it is smaller than the sum of its proper divisors (397521728).

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

390021112 is a wasteful number, since it uses less digits than its factorization.

390021112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3750222 (or 3750218 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 390021112 is about 19748.9521747358. The cubic root of 390021112 is about 730.6275406986.

The spelling of 390021112 in words is "three hundred ninety million, twenty-one thousand, one hundred twelve".