86879040 has 56 divisors (see below), whose sum is σ = 275844000. Its totient is φ = 23167488.

The previous prime is 86879021. The next prime is 86879047. The reversal of 86879040 is 4097868.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 86878983 and 86879001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86879047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44290 + ... + 46209.

Almost surely, 2^86879040 is an apocalyptic number.

86879040 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

86879040 is an abundant number, since it is smaller than the sum of its proper divisors (188964960).

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

86879040 is a wasteful number, since it uses less digits than its factorization.

86879040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90519 (or 90509 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 86879040 is about 9320.8926611135. The cubic root of 86879040 is about 442.8993107858.

The spelling of 86879040 in words is "eighty-six million, eight hundred seventy-nine thousand, forty".