22188479 has 4 divisors (see below), whose sum is σ = 22199400. Its totient is φ = 22177560.

The previous prime is 22188469. The next prime is 22188487. The reversal of 22188479 is 97488122.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22188479 - 2⁸ = 22188223 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 (22188449) 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, 1412 + ... + 6809.

It is an arithmetic number, because the mean of its divisors is an integer number (5549850).

Almost surely, 2^22188479 is an apocalyptic number.

22188479 is a deficient number, since it is larger than the sum of its proper divisors (10921).

22188479 is an equidigital number, since it uses as much as digits as its factorization.

22188479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10920.

The product of its digits is 64512, while the sum is 41.

The square root of 22188479 is about 4710.4648390578. The cubic root of 22188479 is about 281.0018490019.

The spelling of 22188479 in words is "twenty-two million, one hundred eighty-eight thousand, four hundred seventy-nine".