438543972 has 36 divisors (see below), whose sum is σ = 1109336956. Its totient is φ = 146076480.

The previous prime is 438543953. The next prime is 438544009. The reversal of 438543972 is 279345834.

438543972 is a `hidden beast` number, since 4 + 38 + 543 + 9 + 72 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 42693156 + 395850816 = 6534^2 + 19896^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 11 ways as a sum of consecutive naturals, for example, 59178 + ... + 66174.

Almost surely, 2^438543972 is an apocalyptic number.

It is an amenable number.

438543972 is an abundant number, since it is smaller than the sum of its proper divisors (670792984).

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

438543972 is a wasteful number, since it uses less digits than its factorization.

438543972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8748 (or 8743 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The square root of 438543972 is about 20941.4414976620. The cubic root of 438543972 is about 759.7505945247.

The spelling of 438543972 in words is "four hundred thirty-eight million, five hundred forty-three thousand, nine hundred seventy-two".