12990086 has 12 divisors (see below), whose sum is σ = 20182812. Its totient is φ = 6270264.

The previous prime is 12990079. The next prime is 12990097. The reversal of 12990086 is 68009921.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 2180 + ... + 5543.

It is an arithmetic number, because the mean of its divisors is an integer number (1681901).

Almost surely, 2^12990086 is an apocalyptic number.

12990086 is a deficient number, since it is larger than the sum of its proper divisors (7192726).

12990086 is an equidigital number, since it uses as much as digits as its factorization.

12990086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7783 (or 7754 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 12990086 is about 3604.1761888121. The cubic root of 12990086 is about 235.0736814377.

The spelling of 12990086 in words is "twelve million, nine hundred ninety thousand, eighty-six".