86928831289 has 4 divisors (see below), whose sum is σ = 86935655056. Its totient is φ = 86922007524.

The previous prime is 86928831259. The next prime is 86928831307. The reversal of 86928831289 is 98213882968.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 86928831289 - 2⁷ = 86928831161 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 86928831289.

It is not an unprimeable number, because it can be changed into a prime (86928831229) 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, 3392739 + ... + 3418264.

It is an arithmetic number, because the mean of its divisors is an integer number (21733913764).

Almost surely, 2^86928831289 is an apocalyptic number.

It is an amenable number.

86928831289 is a deficient number, since it is larger than the sum of its proper divisors (6823767).

86928831289 is a wasteful number, since it uses less digits than its factorization.

86928831289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6823766.

The product of its digits is 23887872, while the sum is 64.

The spelling of 86928831289 in words is "eighty-six billion, nine hundred twenty-eight million, eight hundred thirty-one thousand, two hundred eighty-nine".