86438115 has 48 divisors (see below), whose sum is σ = 160325568. Its totient is φ = 42928128.

The previous prime is 86438113. The next prime is 86438147. The reversal of 86438115 is 51183468.

86438115 is a `hidden beast` number, since 8 + 643 + 8 + 1 + 1 + 5 = 666.

It is not a de Polignac number, because 86438115 - 2¹ = 86438113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86438115.

It is not an unprimeable number, because it can be changed into a prime (86438113) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 78247 + ... + 79343.

It is an arithmetic number, because the mean of its divisors is an integer number (3340116).

Almost surely, 2^86438115 is an apocalyptic number.

86438115 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

86438115 is a deficient number, since it is larger than the sum of its proper divisors (73887453).

86438115 is a wasteful number, since it uses less digits than its factorization.

86438115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1228 (or 1225 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 86438115 is about 9297.2100653906. The cubic root of 86438115 is about 442.1487780857.

The spelling of 86438115 in words is "eighty-six million, four hundred thirty-eight thousand, one hundred fifteen".