22399453 has 4 divisors (see below), whose sum is σ = 23122048. Its totient is φ = 21676860.

The previous prime is 22399441. The next prime is 22399471. The reversal of 22399453 is 35499322.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35499322 = 2 ⋅17749661.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22399453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22369453) 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, 361251 + ... + 361312.

It is an arithmetic number, because the mean of its divisors is an integer number (5780512).

Almost surely, 2^22399453 is an apocalyptic number.

It is an amenable number.

22399453 is a deficient number, since it is larger than the sum of its proper divisors (722595).

22399453 is an equidigital number, since it uses as much as digits as its factorization.

22399453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722594.

The product of its digits is 58320, while the sum is 37.

The square root of 22399453 is about 4732.8060387047. The cubic root of 22399453 is about 281.8896546970.

The spelling of 22399453 in words is "twenty-two million, three hundred ninety-nine thousand, four hundred fifty-three".