22090489 has 8 divisors (see below), whose sum is σ = 23090760. Its totient is φ = 21106176.

The previous prime is 22090469. The next prime is 22090493. The reversal of 22090489 is 98409022.

It can be written as a sum of positive squares in 4 ways, for example, as 75625 + 22014864 = 275^2 + 4692^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22090489 - 2¹³ = 22082297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22090459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1114 + ... + 6739.

It is an arithmetic number, because the mean of its divisors is an integer number (2886345).

Almost surely, 2^22090489 is an apocalyptic number.

22090489 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

22090489 is a deficient number, since it is larger than the sum of its proper divisors (1000271).

22090489 is an equidigital number, since it uses as much as digits as its factorization.

22090489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7979.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 22090489 is about 4700.0520209887. The cubic root of 22090489 is about 280.5875798769.

It can be divided in two parts, 220 and 90489, that added together give a palindrome (90709).

The spelling of 22090489 in words is "twenty-two million, ninety thousand, four hundred eighty-nine".