22195489 has 6 divisors (see below), whose sum is σ = 23578214. Its totient is φ = 20889600.

The previous prime is 22195471. The next prime is 22195493. The reversal of 22195489 is 98459122.

It can be written as a sum of positive squares in 3 ways, for example, as 15523600 + 6671889 = 3940^2 + 2583^2 .

It is not a de Polignac number, because 22195489 - 2⁷ = 22195361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22195889) 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 5 ways as a sum of consecutive naturals, for example, 38112 + ... + 38689.

Almost surely, 2^22195489 is an apocalyptic number.

It is an amenable number.

22195489 is a deficient number, since it is larger than the sum of its proper divisors (1382725).

22195489 is an equidigital number, since it uses as much as digits as its factorization.

22195489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76835 (or 76818 counting only the distinct ones).

The product of its digits is 51840, while the sum is 40.

The square root of 22195489 is about 4711.2088682206. The cubic root of 22195489 is about 281.0314381648.

The spelling of 22195489 in words is "twenty-two million, one hundred ninety-five thousand, four hundred eighty-nine".