438079660 has 12 divisors (see below), whose sum is σ = 919967328. Its totient is φ = 175231856.

The previous prime is 438079651. The next prime is 438079669. The reversal of 438079660 is 66970834.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (438079651) and next prime (438079669).

It is not an unprimeable number, because it can be changed into a prime (438079669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10951972 + ... + 10952011.

It is an arithmetic number, because the mean of its divisors is an integer number (76663944).

Almost surely, 2^438079660 is an apocalyptic number.

It is an amenable number.

438079660 is an abundant number, since it is smaller than the sum of its proper divisors (481887668).

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

438079660 is a wasteful number, since it uses less digits than its factorization.

438079660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21903992 (or 21903990 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 438079660 is about 20930.3526009477. The cubic root of 438079660 is about 759.4823691318.

The spelling of 438079660 in words is "four hundred thirty-eight million, seventy-nine thousand, six hundred sixty".