22809449 has 8 divisors (see below), whose sum is σ = 24790920. Its totient is φ = 20860416.

The previous prime is 22809421. The next prime is 22809463. The reversal of 22809449 is 94490822.

It can be written as a sum of positive squares in 4 ways, for example, as 2496400 + 20313049 = 1580^2 + 4507^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22809449 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22809419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6632 + ... + 9465.

It is an arithmetic number, because the mean of its divisors is an integer number (3098865).

Almost surely, 2^22809449 is an apocalyptic number.

It is an amenable number.

22809449 is a deficient number, since it is larger than the sum of its proper divisors (1981471).

22809449 is a wasteful number, since it uses less digits than its factorization.

22809449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16219.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 22809449 is about 4775.9238896783. The cubic root of 22809449 is about 283.5991542988.

The spelling of 22809449 in words is "twenty-two million, eight hundred nine thousand, four hundred forty-nine".