86885440 has 28 divisors (see below), whose sum is σ = 206896716. Its totient is φ = 34754048.

The previous prime is 86885431. The next prime is 86885441. The reversal of 86885440 is 4458868.

It can be written as a sum of positive squares in 2 ways, for example, as 12787776 + 74097664 = 3576^2 + 8608^2 .

It is not an unprimeable number, because it can be changed into a prime (86885441) 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, 135439 + ... + 136078.

Almost surely, 2^86885440 is an apocalyptic number.

86885440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

86885440 is an abundant number, since it is smaller than the sum of its proper divisors (120011276).

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

86885440 is a wasteful number, since it uses less digits than its factorization.

86885440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271534 (or 271524 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 43.

The square root of 86885440 is about 9321.2359695482. The cubic root of 86885440 is about 442.9101860057.

The spelling of 86885440 in words is "eighty-six million, eight hundred eighty-five thousand, four hundred forty".