439379231 has 2 divisors, whose sum is σ = 439379232. Its totient is φ = 439379230.

The previous prime is 439379221. The next prime is 439379257. The reversal of 439379231 is 132973934.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 439379231 - 2¹⁸ = 439117087 is a prime.

It is a super-2 number, since 2×439379231² = 386108217268302722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (439379201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219689615 + 219689616.

It is an arithmetic number, because the mean of its divisors is an integer number (219689616).

Almost surely, 2^439379231 is an apocalyptic number.

439379231 is a deficient number, since it is larger than the sum of its proper divisors (1).

439379231 is an equidigital number, since it uses as much as digits as its factorization.

439379231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122472, while the sum is 41.

The square root of 439379231 is about 20961.3747402216. The cubic root of 439379231 is about 760.2326336550.

The spelling of 439379231 in words is "four hundred thirty-nine million, three hundred seventy-nine thousand, two hundred thirty-one".