86499911 has 4 divisors (see below), whose sum is σ = 86829072. Its totient is φ = 86170752.

The previous prime is 86499863. The next prime is 86499937. The reversal of 86499911 is 11999468.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86499911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86499971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164186 + ... + 164711.

It is an arithmetic number, because the mean of its divisors is an integer number (21707268).

Almost surely, 2^86499911 is an apocalyptic number.

86499911 is a deficient number, since it is larger than the sum of its proper divisors (329161).

86499911 is a wasteful number, since it uses less digits than its factorization.

86499911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329160.

The product of its digits is 139968, while the sum is 47.

The square root of 86499911 is about 9300.5328341983. The cubic root of 86499911 is about 442.2541194129.

The spelling of 86499911 in words is "eighty-six million, four hundred ninety-nine thousand, nine hundred eleven".