79039786639 has 8 divisors (see below), whose sum is σ = 88230460032. Its totient is φ = 70183319640.

The previous prime is 79039786591. The next prime is 79039786643. The reversal of 79039786639 is 93668793097.

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

It is a cyclic number.

It is not a de Polignac number, because 79039786639 - 2⁹ = 79039786127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79039780639) 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, 83551099 + ... + 83552044.

It is an arithmetic number, because the mean of its divisors is an integer number (11028807504).

Almost surely, 2^79039786639 is an apocalyptic number.

79039786639 is a deficient number, since it is larger than the sum of its proper divisors (9190673393).

79039786639 is a wasteful number, since it uses less digits than its factorization.

79039786639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167103197.

The product of its (nonzero) digits is 92588832, while the sum is 67.

The spelling of 79039786639 in words is "seventy-nine billion, thirty-nine million, seven hundred eighty-six thousand, six hundred thirty-nine".