438538488 has 32 divisors (see below), whose sum is σ = 1097572560. Its totient is φ = 146016000.

The previous prime is 438538459. The next prime is 438538519. The reversal of 438538488 is 884835834.

It is a happy number.

It is a super-2 number, since 2×438538488² = 384632010914652288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 438538488.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 12738 + ... + 32238.

Almost surely, 2^438538488 is an apocalyptic number.

It is an amenable number.

438538488 is an abundant number, since it is smaller than the sum of its proper divisors (659034072).

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

438538488 is a wasteful number, since it uses less digits than its factorization.

438538488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20447 (or 20443 counting only the distinct ones).

The product of its digits is 2949120, while the sum is 51.

The square root of 438538488 is about 20941.3105607075. The cubic root of 438538488 is about 759.7474276134.

The spelling of 438538488 in words is "four hundred thirty-eight million, five hundred thirty-eight thousand, four hundred eighty-eight".