439459073 has 2 divisors, whose sum is σ = 439459074. Its totient is φ = 439459072.

The previous prime is 439459049. The next prime is 439459109. The reversal of 439459073 is 370954934.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 435264769 + 4194304 = 20863^2 + 2048^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-439459073 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (439452073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219729536 + 219729537.

It is an arithmetic number, because the mean of its divisors is an integer number (219729537).

Almost surely, 2^439459073 is an apocalyptic number.

It is an amenable number.

439459073 is a deficient number, since it is larger than the sum of its proper divisors (1).

439459073 is an equidigital number, since it uses as much as digits as its factorization.

439459073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 408240, while the sum is 44.

The square root of 439459073 is about 20963.2791566587. The cubic root of 439459073 is about 760.2786795408.

The spelling of 439459073 in words is "four hundred thirty-nine million, four hundred fifty-nine thousand, seventy-three".