86197859 has 24 divisors (see below), whose sum is σ = 101122560. Its totient is φ = 73248560.

The previous prime is 86197849. The next prime is 86197883. The reversal of 86197859 is 95879168.

It is not a de Polignac number, because 86197859 - 2⁸ = 86197603 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86197859.

It is not an unprimeable number, because it can be changed into a prime (86197849) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 130472 + ... + 131130.

It is an arithmetic number, because the mean of its divisors is an integer number (4213440).

Almost surely, 2^86197859 is an apocalyptic number.

86197859 is a deficient number, since it is larger than the sum of its proper divisors (14924701).

86197859 is a wasteful number, since it uses less digits than its factorization.

86197859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751 (or 740 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 53.

The square root of 86197859 is about 9284.2802090415. The cubic root of 86197859 is about 441.7387449629.

The spelling of 86197859 in words is "eighty-six million, one hundred ninety-seven thousand, eight hundred fifty-nine".