22440469 has 4 divisors (see below), whose sum is σ = 22528044. Its totient is φ = 22352896.

The previous prime is 22440449. The next prime is 22440487. The reversal of 22440469 is 96404422.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96404422 = 2 ⋅48202211.

It can be written as a sum of positive squares in 2 ways, for example, as 15311569 + 7128900 = 3913^2 + 2670^2 .

It is a cyclic number.

It is not a de Polignac number, because 22440469 - 2⁵ = 22440437 is a prime.

It is a super-2 number, since 2×22440469² = 1007149297879922, 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 22440469.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22440449) 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, 43402 + ... + 43915.

It is an arithmetic number, because the mean of its divisors is an integer number (5632011).

Almost surely, 2^22440469 is an apocalyptic number.

It is an amenable number.

22440469 is a deficient number, since it is larger than the sum of its proper divisors (87575).

22440469 is an equidigital number, since it uses as much as digits as its factorization.

22440469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87574.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 22440469 is about 4737.1372156610. The cubic root of 22440469 is about 282.0616073504.

The spelling of 22440469 in words is "twenty-two million, four hundred forty thousand, four hundred sixty-nine".