87669684939 has 4 divisors (see below), whose sum is σ = 116892913256. Its totient is φ = 58446456624.

The previous prime is 87669684931. The next prime is 87669684989. The reversal of 87669684939 is 93948696678.

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

It is not a de Polignac number, because 87669684939 - 2³ = 87669684931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87669684931) 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, 14611614154 + ... + 14611614159.

It is an arithmetic number, because the mean of its divisors is an integer number (29223228314).

Almost surely, 2^87669684939 is an apocalyptic number.

87669684939 is a deficient number, since it is larger than the sum of its proper divisors (29223228317).

87669684939 is a wasteful number, since it uses less digits than its factorization.

87669684939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29223228316.

The product of its digits is 846526464, while the sum is 75.

The spelling of 87669684939 in words is "eighty-seven billion, six hundred sixty-nine million, six hundred eighty-four thousand, nine hundred thirty-nine".