22254989 has 4 divisors (see below), whose sum is σ = 23564124. Its totient is φ = 20945856.

The previous prime is 22254983. The next prime is 22254997. The reversal of 22254989 is 98945222.

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 17598025 + 4656964 = 4195^2 + 2158^2 .

It is a cyclic number.

It is not a de Polignac number, because 22254989 - 2⁸ = 22254733 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22254983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 654542 + ... + 654575.

It is an arithmetic number, because the mean of its divisors is an integer number (5891031).

Almost surely, 2^22254989 is an apocalyptic number.

It is an amenable number.

22254989 is a deficient number, since it is larger than the sum of its proper divisors (1309135).

22254989 is a wasteful number, since it uses less digits than its factorization.

22254989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1309134.

The product of its digits is 103680, while the sum is 41.

The square root of 22254989 is about 4717.5193693296. The cubic root of 22254989 is about 281.2823367593.

The spelling of 22254989 in words is "twenty-two million, two hundred fifty-four thousand, nine hundred eighty-nine".