86938667887 has 4 divisors (see below), whose sum is σ = 86942451816. Its totient is φ = 86934883960.

The previous prime is 86938667873. The next prime is 86938667903. The reversal of 86938667887 is 78876683968.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86938667887 is a prime.

It is a super-3 number, since 3×86938667887³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86938667687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1857289 + ... + 1903522.

It is an arithmetic number, because the mean of its divisors is an integer number (21735612954).

Almost surely, 2^86938667887 is an apocalyptic number.

86938667887 is a deficient number, since it is larger than the sum of its proper divisors (3783929).

86938667887 is a wasteful number, since it uses less digits than its factorization.

86938667887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3783928.

The product of its digits is 1170505728, while the sum is 76.

The spelling of 86938667887 in words is "eighty-six billion, nine hundred thirty-eight million, six hundred sixty-seven thousand, eight hundred eighty-seven".