22439173 has 4 divisors (see below), whose sum is σ = 22522860. Its totient is φ = 22355488.

The previous prime is 22439119. The next prime is 22439189. The reversal of 22439173 is 37193422.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1481089 + 20958084 = 1217^2 + 4578^2 .

It is a cyclic number.

It is not a de Polignac number, because 22439173 - 2¹⁷ = 22308101 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 (22439773) 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, 41440 + ... + 41977.

It is an arithmetic number, because the mean of its divisors is an integer number (5630715).

Almost surely, 2^22439173 is an apocalyptic number.

It is an amenable number.

22439173 is a deficient number, since it is larger than the sum of its proper divisors (83687).

22439173 is an equidigital number, since it uses as much as digits as its factorization.

22439173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83686.

The product of its digits is 9072, while the sum is 31.

The square root of 22439173 is about 4737.0004222081. Note that the first 3 decimals coincide. The cubic root of 22439173 is about 282.0561772963.

The spelling of 22439173 in words is "twenty-two million, four hundred thirty-nine thousand, one hundred seventy-three".