439872431 has 2 divisors, whose sum is σ = 439872432. Its totient is φ = 439872430.

The previous prime is 439872409. The next prime is 439872449. The reversal of 439872431 is 134278934.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 439872431 - 2¹⁴ = 439856047 is a prime.

It is a super-2 number, since 2×439872431² = 386975511107699522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (439872931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219936215 + 219936216.

It is an arithmetic number, because the mean of its divisors is an integer number (219936216).

Almost surely, 2^439872431 is an apocalyptic number.

439872431 is a deficient number, since it is larger than the sum of its proper divisors (1).

439872431 is an equidigital number, since it uses as much as digits as its factorization.

439872431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 41.

The square root of 439872431 is about 20973.1359362400. The cubic root of 439872431 is about 760.5169791621.

The spelling of 439872431 in words is "four hundred thirty-nine million, eight hundred seventy-two thousand, four hundred thirty-one".