23224399 has 4 divisors (see below), whose sum is σ = 25335720. Its totient is φ = 21113080.

The previous prime is 23224393. The next prime is 23224433. The reversal of 23224399 is 99342232.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 23224399 - 2³ = 23224391 is a prime.

It is a super-2 number, since 2×23224399² = 1078745417822402, 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 (23224391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1055644 + ... + 1055665.

It is an arithmetic number, because the mean of its divisors is an integer number (6333930).

Almost surely, 2^23224399 is an apocalyptic number.

23224399 is a deficient number, since it is larger than the sum of its proper divisors (2111321).

23224399 is a wasteful number, since it uses less digits than its factorization.

23224399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2111320.

The product of its digits is 23328, while the sum is 34.

The square root of 23224399 is about 4819.1699492755. The cubic root of 23224399 is about 285.3085772344.

It can be divided in two parts, 23 and 224399, that added together give a palindrome (224422).

The spelling of 23224399 in words is "twenty-three million, two hundred twenty-four thousand, three hundred ninety-nine".