22449449 has 16 divisors (see below), whose sum is σ = 25868160. Its totient is φ = 19282560.

The previous prime is 22449443. The next prime is 22449457. The reversal of 22449449 is 94494422.

It is a de Polignac number, because none of the positive numbers 2^k-22449449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22449443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22019 + ... + 23015.

It is an arithmetic number, because the mean of its divisors is an integer number (1616760).

Almost surely, 2^22449449 is an apocalyptic number.

It is an amenable number.

22449449 is a deficient number, since it is larger than the sum of its proper divisors (3418711).

22449449 is a wasteful number, since it uses less digits than its factorization.

22449449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120.

The product of its digits is 82944, while the sum is 38.

The square root of 22449449 is about 4738.0849506947. The cubic root of 22449449 is about 282.0992265203.

The spelling of 22449449 in words is "twenty-two million, four hundred forty-nine thousand, four hundred forty-nine".