2564427239 has 12 divisors (see below), whose sum is σ = 2818353048. Its totient is φ = 2314094400.

The previous prime is 2564427199. The next prime is 2564427241. The reversal of 2564427239 is 9327244652.

It is not a de Polignac number, because 2564427239 - 2⁸ = 2564426983 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2564427239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2564427259) 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 11 ways as a sum of consecutive naturals, for example, 200249 + ... + 212669.

It is an arithmetic number, because the mean of its divisors is an integer number (234862754).

Almost surely, 2^2564427239 is an apocalyptic number.

2564427239 is a deficient number, since it is larger than the sum of its proper divisors (253925809).

2564427239 is a wasteful number, since it uses less digits than its factorization.

2564427239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12706 (or 12569 counting only the distinct ones).

The product of its digits is 725760, while the sum is 44.

The square root of 2564427239 is about 50640.1741604430. The cubic root of 2564427239 is about 1368.7688940380.

The spelling of 2564427239 in words is "two billion, five hundred sixty-four million, four hundred twenty-seven thousand, two hundred thirty-nine".