438638942 has 16 divisors (see below), whose sum is σ = 752222592. Its totient is φ = 187920600.

The previous prime is 438638929. The next prime is 438638987. The reversal of 438638942 is 249836834.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67613 + ... + 73815.

It is an arithmetic number, because the mean of its divisors is an integer number (47013912).

Almost surely, 2^438638942 is an apocalyptic number.

438638942 is a deficient number, since it is larger than the sum of its proper divisors (313583650).

438638942 is a wasteful number, since it uses less digits than its factorization.

438638942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11263.

The product of its digits is 995328, while the sum is 47.

The square root of 438638942 is about 20943.7088883512. The cubic root of 438638942 is about 759.8054338041.

The spelling of 438638942 in words is "four hundred thirty-eight million, six hundred thirty-eight thousand, nine hundred forty-two".