86977854439 has 4 divisors (see below), whose sum is σ = 99403262224. Its totient is φ = 74552446656.

The previous prime is 86977854437. The next prime is 86977854449. The reversal of 86977854439 is 93445877968.

It is a happy number.

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 86977854439 - 2¹ = 86977854437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86977854433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6212703882 + ... + 6212703895.

It is an arithmetic number, because the mean of its divisors is an integer number (24850815556).

Almost surely, 2^86977854439 is an apocalyptic number.

86977854439 is a deficient number, since it is larger than the sum of its proper divisors (12425407785).

86977854439 is a wasteful number, since it uses less digits than its factorization.

86977854439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12425407784.

The product of its digits is 365783040, while the sum is 70.

The spelling of 86977854439 in words is "eighty-six billion, nine hundred seventy-seven million, eight hundred fifty-four thousand, four hundred thirty-nine".