22452399 has 6 divisors (see below), whose sum is σ = 32431256. Its totient is φ = 14968260.

The previous prime is 22452389. The next prime is 22452403. The reversal of 22452399 is 99325422.

It is not a de Polignac number, because 22452399 - 2⁴ = 22452383 is a prime.

It is a super-2 number, since 2×22452399² = 1008220441710402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22452389) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1247347 + ... + 1247364.

Almost surely, 2^22452399 is an apocalyptic number.

22452399 is a deficient number, since it is larger than the sum of its proper divisors (9978857).

22452399 is a wasteful number, since it uses less digits than its factorization.

22452399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2494717 (or 2494714 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 22452399 is about 4738.3962476771. The cubic root of 22452399 is about 282.1115825216. Note that the first 3 decimals are identical.

The spelling of 22452399 in words is "twenty-two million, four hundred fifty-two thousand, three hundred ninety-nine".