438938740 has 12 divisors (see below), whose sum is σ = 921771396. Its totient is φ = 175575488.

The previous prime is 438938699. The next prime is 438938771. The reversal of 438938740 is 47839834.

It can be written as a sum of positive squares in 2 ways, for example, as 46185616 + 392753124 = 6796^2 + 19818^2 .

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, 10973449 + ... + 10973488.

It is an arithmetic number, because the mean of its divisors is an integer number (76814283).

Almost surely, 2^438938740 is an apocalyptic number.

It is an amenable number.

438938740 is an abundant number, since it is smaller than the sum of its proper divisors (482832656).

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

438938740 is a wasteful number, since it uses less digits than its factorization.

438938740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21946946 (or 21946944 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 46.

The square root of 438938740 is about 20950.8648986146. The cubic root of 438938740 is about 759.9784966215.

The spelling of 438938740 in words is "four hundred thirty-eight million, nine hundred thirty-eight thousand, seven hundred forty".