439031479 has 2 divisors, whose sum is σ = 439031480. Its totient is φ = 439031478.

The previous prime is 439031413. The next prime is 439031491. The reversal of 439031479 is 974130934.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 439031479 - 2¹⁵ = 438998711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (439031279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219515739 + 219515740.

It is an arithmetic number, because the mean of its divisors is an integer number (219515740).

Almost surely, 2^439031479 is an apocalyptic number.

439031479 is a deficient number, since it is larger than the sum of its proper divisors (1).

439031479 is an equidigital number, since it uses as much as digits as its factorization.

439031479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 439031479 is about 20953.0780316401. The cubic root of 439031479 is about 760.0320156181.

The spelling of 439031479 in words is "four hundred thirty-nine million, thirty-one thousand, four hundred seventy-nine".