939879865689 has 8 divisors (see below), whose sum is σ = 1296386021760. Its totient is φ = 604980143376.

The previous prime is 939879865643. The next prime is 939879865733. The reversal of 939879865689 is 986568978939.

It is a happy number.

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

It is not a de Polignac number, because 939879865689 - 2¹⁵ = 939879832921 is a prime.

It is a super-3 number, since 3×939879865689³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (87), and also a Moran number because the ratio is a prime number: 10803216847 = 939879865689 / (9 + 3 + 9 + 8 + 7 + 9 + 8 + 6 + 5 + 6 + 8 + 9).

It is not an unprimeable number, because it can be changed into a prime (939879865619) 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, 5401608337 + ... + 5401608510.

It is an arithmetic number, because the mean of its divisors is an integer number (162048252720).

Almost surely, 2^939879865689 is an apocalyptic number.

It is an amenable number.

939879865689 is a deficient number, since it is larger than the sum of its proper divisors (356506156071).

939879865689 is a wasteful number, since it uses less digits than its factorization.

939879865689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10803216879.

The product of its digits is 12697896960, while the sum is 87.

The spelling of 939879865689 in words is "nine hundred thirty-nine billion, eight hundred seventy-nine million, eight hundred sixty-five thousand, six hundred eighty-nine".