86157387 has 6 divisors (see below), whose sum is σ = 124449572. Its totient is φ = 57438252.

The previous prime is 86157367. The next prime is 86157389. The reversal of 86157387 is 78375168.

It is a de Polignac number, because none of the positive numbers 2^k-86157387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86157389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4786513 + ... + 4786530.

Almost surely, 2^86157387 is an apocalyptic number.

86157387 is a deficient number, since it is larger than the sum of its proper divisors (38292185).

86157387 is a wasteful number, since it uses less digits than its factorization.

86157387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9573049 (or 9573046 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 86157387 is about 9282.1003549843. The cubic root of 86157387 is about 441.6695984300.

The spelling of 86157387 in words is "eighty-six million, one hundred fifty-seven thousand, three hundred eighty-seven".