12399922 has 8 divisors (see below), whose sum is σ = 18657072. Its totient is φ = 6180900.

The previous prime is 12399901. The next prime is 12399923. The reversal of 12399922 is 22999321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (12399923) 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 in 3 ways as a sum of consecutive naturals, for example, 8704 + ... + 10027.

It is an arithmetic number, because the mean of its divisors is an integer number (2332134).

Almost surely, 2^12399922 is an apocalyptic number.

12399922 is a deficient number, since it is larger than the sum of its proper divisors (6257150).

12399922 is a wasteful number, since it uses less digits than its factorization.

12399922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19064.

The product of its digits is 17496, while the sum is 37.

The square root of 12399922 is about 3521.3522970586. The cubic root of 12399922 is about 231.4584201345.

The spelling of 12399922 in words is "twelve million, three hundred ninety-nine thousand, nine hundred twenty-two".