438136914 has 32 divisors (see below), whose sum is σ = 905748480. Its totient is φ = 141208592.

The previous prime is 438136877. The next prime is 438136931. The reversal of 438136914 is 419631834.

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, 14047 + ... + 32765.

It is an arithmetic number, because the mean of its divisors is an integer number (28304640).

Almost surely, 2^438136914 is an apocalyptic number.

438136914 is an abundant number, since it is smaller than the sum of its proper divisors (467611566).

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

438136914 is a wasteful number, since it uses less digits than its factorization.

438136914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18854.

The product of its digits is 62208, while the sum is 39.

The square root of 438136914 is about 20931.7202828626. The cubic root of 438136914 is about 759.5154540654.

The spelling of 438136914 in words is "four hundred thirty-eight million, one hundred thirty-six thousand, nine hundred fourteen".