431398488 has 32 divisors (see below), whose sum is σ = 1125388800. Its totient is φ = 137547168.

The previous prime is 431398483. The next prime is 431398493. The reversal of 431398488 is 884893134.

It is an interprime number because it is at equal distance from previous prime (431398483) and next prime (431398493).

It is a super-2 number, since 2×431398488² = 372209310897372288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431398481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 390208 + ... + 391311.

It is an arithmetic number, because the mean of its divisors is an integer number (35168400).

Almost surely, 2^431398488 is an apocalyptic number.

It is an amenable number.

431398488 is an abundant number, since it is smaller than the sum of its proper divisors (693990312).

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

431398488 is a wasteful number, since it uses less digits than its factorization.

431398488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781551 (or 781547 counting only the distinct ones).

The product of its digits is 663552, while the sum is 48.

The square root of 431398488 is about 20770.1345205080. The cubic root of 431398488 is about 755.6016069522.

The spelling of 431398488 in words is "four hundred thirty-one million, three hundred ninety-eight thousand, four hundred eighty-eight".