439975013 has 2 divisors, whose sum is σ = 439975014. Its totient is φ = 439975012.

The previous prime is 439975009. The next prime is 439975021. The reversal of 439975013 is 310579934.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 265787809 + 174187204 = 16303^2 + 13198^2 .

It is a cyclic number.

It is not a de Polignac number, because 439975013 - 2² = 439975009 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (439975043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219987506 + 219987507.

It is an arithmetic number, because the mean of its divisors is an integer number (219987507).

Almost surely, 2^439975013 is an apocalyptic number.

It is an amenable number.

439975013 is a deficient number, since it is larger than the sum of its proper divisors (1).

439975013 is an equidigital number, since it uses as much as digits as its factorization.

439975013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 102060, while the sum is 41.

The square root of 439975013 is about 20975.5813507040. The cubic root of 439975013 is about 760.5760942474.

The spelling of 439975013 in words is "four hundred thirty-nine million, nine hundred seventy-five thousand, thirteen".