239979719919 has 8 divisors (see below), whose sum is σ = 320053189680. Its totient is φ = 159946365056.

The previous prime is 239979719891. The next prime is 239979719933. The reversal of 239979719919 is 919917979932.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-239979719919 is a prime.

It is a super-2 number, since 2×239979719919² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239979719939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10014762 + ... + 10038695.

It is an arithmetic number, because the mean of its divisors is an integer number (40006648710).

Almost surely, 2^239979719919 is an apocalyptic number.

239979719919 is a deficient number, since it is larger than the sum of its proper divisors (80073469761).

239979719919 is a wasteful number, since it uses less digits than its factorization.

239979719919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20057449.

The product of its digits is 156243654, while the sum is 75.

The spelling of 239979719919 in words is "two hundred thirty-nine billion, nine hundred seventy-nine million, seven hundred nineteen thousand, nine hundred nineteen".