439520413 has 2 divisors, whose sum is σ = 439520414. Its totient is φ = 439520412.

The previous prime is 439520399. The next prime is 439520423. The reversal of 439520413 is 314025934.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 282845124 + 156675289 = 16818^2 + 12517^2 .

It is a cyclic number.

It is not a de Polignac number, because 439520413 - 2²⁵ = 405965981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (439520423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219760206 + 219760207.

It is an arithmetic number, because the mean of its divisors is an integer number (219760207).

Almost surely, 2^439520413 is an apocalyptic number.

It is an amenable number.

439520413 is a deficient number, since it is larger than the sum of its proper divisors (1).

439520413 is an equidigital number, since it uses as much as digits as its factorization.

439520413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 439520413 is about 20964.7421400789. The cubic root of 439520413 is about 760.3140513023.

The spelling of 439520413 in words is "four hundred thirty-nine million, five hundred twenty thousand, four hundred thirteen".