12491994 has 32 divisors (see below), whose sum is σ = 25717824. Its totient is φ = 4043520.

The previous prime is 12491971. The next prime is 12492001. The reversal of 12491994 is 49919421.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51714 + ... + 51954.

It is an arithmetic number, because the mean of its divisors is an integer number (803682).

Almost surely, 2^12491994 is an apocalyptic number.

12491994 is an abundant number, since it is smaller than the sum of its proper divisors (13225830).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12491994 is a wasteful number, since it uses less digits than its factorization.

12491994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462.

The product of its digits is 23328, while the sum is 39.

The square root of 12491994 is about 3534.4015052057. The cubic root of 12491994 is about 232.0298836852.

The spelling of 12491994 in words is "twelve million, four hundred ninety-one thousand, nine hundred ninety-four".