239989791975 has 12 divisors (see below), whose sum is σ = 396783122856. Its totient is φ = 127994555680.

The previous prime is 239989791973. The next prime is 239989792019. The reversal of 239989791975 is 579197989932.

It is not a de Polignac number, because 239989791975 - 2¹ = 239989791973 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 239989791975.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239989791973) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1599931872 + ... + 1599932021.

It is an arithmetic number, because the mean of its divisors is an integer number (33065260238).

Almost surely, 2^239989791975 is an apocalyptic number.

239989791975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

239989791975 is a deficient number, since it is larger than the sum of its proper divisors (156793330881).

239989791975 is a wasteful number, since it uses less digits than its factorization.

239989791975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3199863906 (or 3199863901 counting only the distinct ones).

The product of its digits is 694416240, while the sum is 78.

The spelling of 239989791975 in words is "two hundred thirty-nine billion, nine hundred eighty-nine million, seven hundred ninety-one thousand, nine hundred seventy-five".