431400986 has 4 divisors (see below), whose sum is σ = 647101482. Its totient is φ = 215700492.

The previous prime is 431400953. The next prime is 431401021. The reversal of 431400986 is 689004134.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 350850361 + 80550625 = 18731^2 + 8975^2 .

It is a super-2 number, since 2×431400986² = 372213621443544392, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107850245 + ... + 107850248.

Almost surely, 2^431400986 is an apocalyptic number.

431400986 is a deficient number, since it is larger than the sum of its proper divisors (215700496).

431400986 is a wasteful number, since it uses less digits than its factorization.

431400986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215700495.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 431400986 is about 20770.1946548413. The cubic root of 431400986 is about 755.6030653788.

The spelling of 431400986 in words is "four hundred thirty-one million, four hundred thousand, nine hundred eighty-six".