87930702979 has 4 divisors (see below), whose sum is σ = 100492231984. Its totient is φ = 75369173976.

The previous prime is 87930702953. The next prime is 87930702983. The reversal of 87930702979 is 97920703978.

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

It is a cyclic number.

It is not a de Polignac number, because 87930702979 - 2¹¹ = 87930700931 is a prime.

It is a super-2 number, since 2×87930702979² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87930702479) 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, 6280764492 + ... + 6280764505.

It is an arithmetic number, because the mean of its divisors is an integer number (25123057996).

Almost surely, 2^87930702979 is an apocalyptic number.

87930702979 is a deficient number, since it is larger than the sum of its proper divisors (12561529005).

87930702979 is a wasteful number, since it uses less digits than its factorization.

87930702979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12561529004.

The product of its (nonzero) digits is 12002256, while the sum is 61.

Subtracting 87930702979 from its reverse (97920703978), we obtain a palindrome (9990000999).

The spelling of 87930702979 in words is "eighty-seven billion, nine hundred thirty million, seven hundred two thousand, nine hundred seventy-nine".