438914646 has 32 divisors (see below), whose sum is σ = 1001731680. Its totient is φ = 142350048.

The previous prime is 438914591. The next prime is 438914699. The reversal of 438914646 is 646419834.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107841 + ... + 111836.

It is an arithmetic number, because the mean of its divisors is an integer number (31304115).

Almost surely, 2^438914646 is an apocalyptic number.

438914646 is an abundant number, since it is smaller than the sum of its proper divisors (562817034).

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

438914646 is a wasteful number, since it uses less digits than its factorization.

438914646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219725 (or 219719 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 438914646 is about 20950.2898786628. The cubic root of 438914646 is about 759.9645909172.

The spelling of 438914646 in words is "four hundred thirty-eight million, nine hundred fourteen thousand, six hundred forty-six".