439354457 has 2 divisors, whose sum is σ = 439354458. Its totient is φ = 439354456.

The previous prime is 439354429. The next prime is 439354469. The reversal of 439354457 is 754453934.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 438316096 + 1038361 = 20936^2 + 1019^2 .

It is a cyclic number.

It is not a de Polignac number, because 439354457 - 2⁶ = 439354393 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (439359457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219677228 + 219677229.

It is an arithmetic number, because the mean of its divisors is an integer number (219677229).

Almost surely, 2^439354457 is an apocalyptic number.

It is an amenable number.

439354457 is a deficient number, since it is larger than the sum of its proper divisors (1).

439354457 is an equidigital number, since it uses as much as digits as its factorization.

439354457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 907200, while the sum is 44.

The square root of 439354457 is about 20960.7837878263. The cubic root of 439354457 is about 760.2183450436.

The spelling of 439354457 in words is "four hundred thirty-nine million, three hundred fifty-four thousand, four hundred fifty-seven".