86993844 has 24 divisors (see below), whose sum is σ = 231983808. Its totient is φ = 24855360.

The previous prime is 86993833. The next prime is 86993873. The reversal of 86993844 is 44839968.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 517737 + ... + 517904.

It is an arithmetic number, because the mean of its divisors is an integer number (9665992).

Almost surely, 2^86993844 is an apocalyptic number.

86993844 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

86993844 is an abundant number, since it is smaller than the sum of its proper divisors (144989964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86993844 is a wasteful number, since it uses less digits than its factorization.

86993844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1035655 (or 1035653 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 51.

The square root of 86993844 is about 9327.0490510129. The cubic root of 86993844 is about 443.0943107623.

The spelling of 86993844 in words is "eighty-six million, nine hundred ninety-three thousand, eight hundred forty-four".