86999912 has 8 divisors (see below), whose sum is σ = 163124850. Its totient is φ = 43499952.

The previous prime is 86999911. The next prime is 86999923. The reversal of 86999912 is 21999968.

It can be written as a sum of positive squares in only one way, i.e., 79459396 + 7540516 = 8914^2 + 2746^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (86999911) 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 as a sum of consecutive naturals, namely, 5437487 + ... + 5437502.

Almost surely, 2^86999912 is an apocalyptic number.

It is an amenable number.

86999912 is a deficient number, since it is larger than the sum of its proper divisors (76124938).

86999912 is a wasteful number, since it uses less digits than its factorization.

86999912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10874995 (or 10874991 counting only the distinct ones).

The product of its digits is 629856, while the sum is 53.

The square root of 86999912 is about 9327.3743357925. The cubic root of 86999912 is about 443.1046127700.

The spelling of 86999912 in words is "eighty-six million, nine hundred ninety-nine thousand, nine hundred twelve".