22879189 has 4 divisors (see below), whose sum is σ = 23437260. Its totient is φ = 22321120.

The previous prime is 22879187. The next prime is 22879247. The reversal of 22879189 is 98197822.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98197822 = 2 ⋅49098911.

It can be written as a sum of positive squares in 2 ways, for example, as 4986289 + 17892900 = 2233^2 + 4230^2 .

It is a cyclic number.

It is not a de Polignac number, because 22879189 - 2¹ = 22879187 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 (22879187) 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, 278974 + ... + 279055.

It is an arithmetic number, because the mean of its divisors is an integer number (5859315).

Almost surely, 2^22879189 is an apocalyptic number.

It is an amenable number.

22879189 is a deficient number, since it is larger than the sum of its proper divisors (558071).

22879189 is an equidigital number, since it uses as much as digits as its factorization.

22879189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558070.

The product of its digits is 145152, while the sum is 46.

The square root of 22879189 is about 4783.2195224556. The cubic root of 22879189 is about 283.8878954819.

It can be divided in two parts, 2287 and 9189, that added together give a triangular number (11476 = T₁₅₁).

The spelling of 22879189 in words is "twenty-two million, eight hundred seventy-nine thousand, one hundred eighty-nine".