22447899 has 12 divisors (see below), whose sum is σ = 32479200. Its totient is φ = 14940144.

The previous prime is 22447897. The next prime is 22447913. The reversal of 22447899 is 99874422.

It is not a de Polignac number, because 22447899 - 2¹ = 22447897 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (22447897) 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 11 ways as a sum of consecutive naturals, for example, 4737 + ... + 8205.

It is an arithmetic number, because the mean of its divisors is an integer number (2706600).

Almost surely, 2^22447899 is an apocalyptic number.

22447899 is a deficient number, since it is larger than the sum of its proper divisors (10031301).

22447899 is a wasteful number, since it uses less digits than its factorization.

22447899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4194 (or 4191 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 22447899 is about 4737.9213796770. The cubic root of 22447899 is about 282.0927339501.

The spelling of 22447899 in words is "twenty-two million, four hundred forty-seven thousand, eight hundred ninety-nine".