117890117839 has 8 divisors (see below), whose sum is σ = 126961686432. Its totient is φ = 108818991840.

The previous prime is 117890117803. The next prime is 117890117887. The reversal of 117890117839 is 938711098711.

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

It is a de Polignac number, because none of the positive numbers 2^k-117890117839 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 117890117839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117890117539) 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, 622557 + ... + 789529.

It is an arithmetic number, because the mean of its divisors is an integer number (15870210804).

Almost surely, 2^117890117839 is an apocalyptic number.

117890117839 is a deficient number, since it is larger than the sum of its proper divisors (9071568593).

117890117839 is a wasteful number, since it uses less digits than its factorization.

117890117839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221297.

The product of its (nonzero) digits is 762048, while the sum is 55.

The spelling of 117890117839 in words is "one hundred seventeen billion, eight hundred ninety million, one hundred seventeen thousand, eight hundred thirty-nine".