22448999 has 4 divisors (see below), whose sum is σ = 22578936. Its totient is φ = 22319064.

The previous prime is 22448981. The next prime is 22449041. The reversal of 22448999 is 99984422.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22448999 is a prime.

It is a super-2 number, since 2×22448999² = 1007915112204002, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22448099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64709 + ... + 65054.

It is an arithmetic number, because the mean of its divisors is an integer number (5644734).

Almost surely, 2^22448999 is an apocalyptic number.

22448999 is a deficient number, since it is larger than the sum of its proper divisors (129937).

22448999 is a wasteful number, since it uses less digits than its factorization.

22448999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129936.

The product of its digits is 373248, while the sum is 47.

The square root of 22448999 is about 4738.0374629165. The cubic root of 22448999 is about 282.0973416113.

The spelling of 22448999 in words is "twenty-two million, four hundred forty-eight thousand, nine hundred ninety-nine".