22609289 has 4 divisors (see below), whose sum is σ = 22623300. Its totient is φ = 22595280.

The previous prime is 22609277. The next prime is 22609309. The reversal of 22609289 is 98290622.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98290622 = 2 ⋅49145311.

It can be written as a sum of positive squares in 2 ways, for example, as 10240000 + 12369289 = 3200^2 + 3517^2 .

It is a cyclic number.

It is not a de Polignac number, because 22609289 - 2⁴ = 22609273 is a prime.

It is a super-2 number, since 2×22609289² = 1022359898171042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22609229) 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, 4214 + ... + 7935.

It is an arithmetic number, because the mean of its divisors is an integer number (5655825).

Almost surely, 2^22609289 is an apocalyptic number.

It is an amenable number.

22609289 is a deficient number, since it is larger than the sum of its proper divisors (14011).

22609289 is a wasteful number, since it uses less digits than its factorization.

22609289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14010.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 22609289 is about 4754.9226071515. The cubic root of 22609289 is about 282.7671589695.

The spelling of 22609289 in words is "twenty-two million, six hundred nine thousand, two hundred eighty-nine".