22339813 has 4 divisors (see below), whose sum is σ = 22349728. Its totient is φ = 22329900.

The previous prime is 22339799. The next prime is 22339829. The reversal of 22339813 is 31893322.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 31893322 = 2 ⋅15946661.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22339813 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 (22339883) 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, 238 + ... + 6688.

It is an arithmetic number, because the mean of its divisors is an integer number (5587432).

Almost surely, 2^22339813 is an apocalyptic number.

It is an amenable number.

22339813 is a deficient number, since it is larger than the sum of its proper divisors (9915).

22339813 is an equidigital number, since it uses as much as digits as its factorization.

22339813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9914.

The product of its digits is 7776, while the sum is 31.

The square root of 22339813 is about 4726.5011372050. The cubic root of 22339813 is about 281.6392491471.

The spelling of 22339813 in words is "twenty-two million, three hundred thirty-nine thousand, eight hundred thirteen".