22399412 has 12 divisors (see below), whose sum is σ = 44798880. Its totient is φ = 9599736.

The previous prime is 22399381. The next prime is 22399427. The reversal of 22399412 is 21499322.

22399412 is an admirable number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 399962 + ... + 400017.

It is an arithmetic number, because the mean of its divisors is an integer number (3733240).

Almost surely, 2^22399412 is an apocalyptic number.

It is an amenable number.

22399412 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22399412 is a wasteful number, since it uses less digits than its factorization.

22399412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799990 (or 799988 counting only the distinct ones).

The product of its digits is 7776, while the sum is 32.

The square root of 22399412 is about 4732.8017072343. The cubic root of 22399412 is about 281.8894827065.

The spelling of 22399412 in words is "twenty-two million, three hundred ninety-nine thousand, four hundred twelve".