83691960239 has 4 divisors (see below), whose sum is σ = 83693017560. Its totient is φ = 83690902920.

The previous prime is 83691960229. The next prime is 83691960299. The reversal of 83691960239 is 93206919638.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83691960239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83691960229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 399392 + ... + 571749.

It is an arithmetic number, because the mean of its divisors is an integer number (20923254390).

Almost surely, 2^83691960239 is an apocalyptic number.

83691960239 is a deficient number, since it is larger than the sum of its proper divisors (1057321).

83691960239 is an equidigital number, since it uses as much as digits as its factorization.

83691960239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1057320.

The product of its (nonzero) digits is 3779136, while the sum is 56.

The spelling of 83691960239 in words is "eighty-three billion, six hundred ninety-one million, nine hundred sixty thousand, two hundred thirty-nine".