438865938 has 40 divisors (see below), whose sum is σ = 1123871232. Its totient is φ = 125389944.

The previous prime is 438865877. The next prime is 438865939. The reversal of 438865938 is 839568834.

It is a happy number.

438865938 is a `hidden beast` number, since 43 + 8 + 8 + 6 + 593 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (438865939) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 192370 + ... + 194637.

Almost surely, 2^438865938 is an apocalyptic number.

438865938 is an abundant number, since it is smaller than the sum of its proper divisors (685005294).

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

438865938 is a wasteful number, since it uses less digits than its factorization.

438865938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387028 (or 387019 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 54.

The square root of 438865938 is about 20949.1273803946. The cubic root of 438865938 is about 759.9364778395.

The spelling of 438865938 in words is "four hundred thirty-eight million, eight hundred sixty-five thousand, nine hundred thirty-eight".