86156399 has 4 divisors (see below), whose sum is σ = 98464464. Its totient is φ = 73848336.

The previous prime is 86156381. The next prime is 86156401. The reversal of 86156399 is 99365168.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 86156399 - 2⁸ = 86156143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86156309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6154022 + ... + 6154035.

It is an arithmetic number, because the mean of its divisors is an integer number (24616116).

Almost surely, 2^86156399 is an apocalyptic number.

86156399 is a deficient number, since it is larger than the sum of its proper divisors (12308065).

86156399 is a wasteful number, since it uses less digits than its factorization.

86156399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12308064.

The product of its digits is 349920, while the sum is 47.

The square root of 86156399 is about 9282.0471341186. The cubic root of 86156399 is about 441.6679101583.

The spelling of 86156399 in words is "eighty-six million, one hundred fifty-six thousand, three hundred ninety-nine".