12491922 has 16 divisors (see below), whose sum is σ = 25021152. Its totient is φ = 4157760.

The previous prime is 12491917. The next prime is 12491933. The reversal of 12491922 is 22919421.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12491922.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 4797 + ... + 6927.

It is an arithmetic number, because the mean of its divisors is an integer number (1563822).

Almost surely, 2^12491922 is an apocalyptic number.

12491922 is an abundant number, since it is smaller than the sum of its proper divisors (12529230).

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

12491922 is a wasteful number, since it uses less digits than its factorization.

12491922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3113.

The product of its digits is 2592, while the sum is 30.

The square root of 12491922 is about 3534.3913195910. The cubic root of 12491922 is about 232.0294379015.

The spelling of 12491922 in words is "twelve million, four hundred ninety-one thousand, nine hundred twenty-two".