86915385 has 12 divisors (see below), whose sum is σ = 150653412. Its totient is φ = 46354848.

The previous prime is 86915369. The next prime is 86915399. The reversal of 86915385 is 58351968.

It can be written as a sum of positive squares in 2 ways, for example, as 9809424 + 77105961 = 3132^2 + 8781^2 .

It is not a de Polignac number, because 86915385 - 2⁴ = 86915369 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1931453 = 86915385 / (8 + 6 + 9 + 1 + 5 + 3 + 8 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 86915385.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 965682 + ... + 965771.

It is an arithmetic number, because the mean of its divisors is an integer number (12554451).

Almost surely, 2^86915385 is an apocalyptic number.

It is an amenable number.

86915385 is a deficient number, since it is larger than the sum of its proper divisors (63738027).

86915385 is a wasteful number, since it uses less digits than its factorization.

86915385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1931464 (or 1931461 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The square root of 86915385 is about 9322.8421095715. The cubic root of 86915385 is about 442.9610630461.

The spelling of 86915385 in words is "eighty-six million, nine hundred fifteen thousand, three hundred eighty-five".