439081493 has 2 divisors, whose sum is σ = 439081494. Its totient is φ = 439081492.

The previous prime is 439081483. The next prime is 439081519. The reversal of 439081493 is 394180934.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 365842129 + 73239364 = 19127^2 + 8558^2 .

It is a cyclic number.

It is not a de Polignac number, because 439081493 - 2²⁴ = 422304277 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 439081493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (439081403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219540746 + 219540747.

It is an arithmetic number, because the mean of its divisors is an integer number (219540747).

Almost surely, 2^439081493 is an apocalyptic number.

It is an amenable number.

439081493 is a deficient number, since it is larger than the sum of its proper divisors (1).

439081493 is an equidigital number, since it uses as much as digits as its factorization.

439081493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 439081493 is about 20954.2714738547. The cubic root of 439081493 is about 760.0608752023.

The spelling of 439081493 in words is "four hundred thirty-nine million, eighty-one thousand, four hundred ninety-three".