22009369 has 4 divisors (see below), whose sum is σ = 22021300. Its totient is φ = 21997440.

The previous prime is 22009343. The next prime is 22009387. The reversal of 22009369 is 96390022.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 7225344 + 14784025 = 2688^2 + 3845^2 .

It is a cyclic number.

It is not a de Polignac number, because 22009369 - 2⁷ = 22009241 is a prime.

It is a super-2 number, since 2×22009369² = 968824647556322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22009369.

It is not an unprimeable number, because it can be changed into a prime (22009319) 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, 2544 + ... + 7105.

It is an arithmetic number, because the mean of its divisors is an integer number (5505325).

Almost surely, 2^22009369 is an apocalyptic number.

It is an amenable number.

22009369 is a deficient number, since it is larger than the sum of its proper divisors (11931).

22009369 is an equidigital number, since it uses as much as digits as its factorization.

22009369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11930.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 22009369 is about 4691.4143922702. The cubic root of 22009369 is about 280.2437036424.

The spelling of 22009369 in words is "twenty-two million, nine thousand, three hundred sixty-nine".