22389805 has 4 divisors (see below), whose sum is σ = 26867772. Its totient is φ = 17911840.

The previous prime is 22389803. The next prime is 22389821. The reversal of 22389805 is 50898322.

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 12574116 + 9815689 = 3546^2 + 3133^2 .

It is not a de Polignac number, because 22389805 - 2¹ = 22389803 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 (22389803) 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, 2238976 + ... + 2238985.

It is an arithmetic number, because the mean of its divisors is an integer number (6716943).

Almost surely, 2^22389805 is an apocalyptic number.

It is an amenable number.

22389805 is a deficient number, since it is larger than the sum of its proper divisors (4477967).

22389805 is an equidigital number, since it uses as much as digits as its factorization.

22389805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4477966.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 22389805 is about 4731.7866604487. The cubic root of 22389805 is about 281.8491765961.

The spelling of 22389805 in words is "twenty-two million, three hundred eighty-nine thousand, eight hundred five".