2539406459 has 4 divisors (see below), whose sum is σ = 2608039104. Its totient is φ = 2470773816.

The previous prime is 2539406453. The next prime is 2539406477. The reversal of 2539406459 is 9546049352.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2539406459 - 2⁸ = 2539406203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2539406453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34316267 + ... + 34316340.

It is an arithmetic number, because the mean of its divisors is an integer number (652009776).

Almost surely, 2^2539406459 is an apocalyptic number.

2539406459 is a deficient number, since it is larger than the sum of its proper divisors (68632645).

2539406459 is an equidigital number, since it uses as much as digits as its factorization.

2539406459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68632644.

The product of its (nonzero) digits is 1166400, while the sum is 47.

The square root of 2539406459 is about 50392.5238403476. The cubic root of 2539406459 is about 1364.3027042292.

The spelling of 2539406459 in words is "two billion, five hundred thirty-nine million, four hundred six thousand, four hundred fifty-nine".