12999087 has 12 divisors (see below), whose sum is σ = 18893784. Its totient is φ = 8611920.

The previous prime is 12999083. The next prime is 12999089. The reversal of 12999087 is 78099921.

It is not a de Polignac number, because 12999087 - 2² = 12999083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12999083) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2964 + ... + 5897.

It is an arithmetic number, because the mean of its divisors is an integer number (1574482).

Almost surely, 2^12999087 is an apocalyptic number.

12999087 is a deficient number, since it is larger than the sum of its proper divisors (5894697).

12999087 is a wasteful number, since it uses less digits than its factorization.

12999087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9030 (or 9027 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The square root of 12999087 is about 3605.4246629211. The cubic root of 12999087 is about 235.1279641084.

The spelling of 12999087 in words is "twelve million, nine hundred ninety-nine thousand, eighty-seven".