19398942 has 12 divisors (see below), whose sum is σ = 42031080. Its totient is φ = 6466308.

The previous prime is 19398937. The next prime is 19398961. The reversal of 19398942 is 24989391.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 538842 + ... + 538877.

It is an arithmetic number, because the mean of its divisors is an integer number (3502590).

Almost surely, 2^19398942 is an apocalyptic number.

19398942 is an abundant number, since it is smaller than the sum of its proper divisors (22632138).

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

19398942 is a wasteful number, since it uses less digits than its factorization.

19398942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077727 (or 1077724 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 19398942 is about 4404.4230042084. The cubic root of 19398942 is about 268.6948535128.

The spelling of 19398942 in words is "nineteen million, three hundred ninety-eight thousand, nine hundred forty-two".