42889938 has 32 divisors (see below), whose sum is σ = 105576576. Its totient is φ = 11311488.

The previous prime is 42889883. The next prime is 42889999. The reversal of 42889938 is 83998824.

It is a happy number.

42889938 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 38731 + ... + 39822.

It is an arithmetic number, because the mean of its divisors is an integer number (3299268).

Almost surely, 2^42889938 is an apocalyptic number.

42889938 is an abundant number, since it is smaller than the sum of its proper divisors (62686638).

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

42889938 is a wasteful number, since it uses less digits than its factorization.

42889938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78578.

The product of its digits is 995328, while the sum is 51.

The square root of 42889938 is about 6549.0409984974. The cubic root of 42889938 is about 350.0406428993.

The spelling of 42889938 in words is "forty-two million, eight hundred eighty-nine thousand, nine hundred thirty-eight".