22205399 has 4 divisors (see below), whose sum is σ = 22486560. Its totient is φ = 21924240.

The previous prime is 22205377. The next prime is 22205413. The reversal of 22205399 is 99350222.

It is a happy number.

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-22205399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22205369) 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, 140462 + ... + 140619.

It is an arithmetic number, because the mean of its divisors is an integer number (5621640).

Almost surely, 2^22205399 is an apocalyptic number.

22205399 is a deficient number, since it is larger than the sum of its proper divisors (281161).

22205399 is an equidigital number, since it uses as much as digits as its factorization.

22205399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281160.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 22205399 is about 4712.2604978927. The cubic root of 22205399 is about 281.0732575808.

The spelling of 22205399 in words is "twenty-two million, two hundred five thousand, three hundred ninety-nine".