22447489 has 4 divisors (see below), whose sum is σ = 22457520. Its totient is φ = 22437460.

The previous prime is 22447483. The next prime is 22447501. The reversal of 22447489 is 98474422.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22447489 - 2⁵ = 22447457 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22447483) 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, 42 + ... + 6700.

It is an arithmetic number, because the mean of its divisors is an integer number (5614380).

Almost surely, 2^22447489 is an apocalyptic number.

It is an amenable number.

22447489 is a deficient number, since it is larger than the sum of its proper divisors (10031).

22447489 is an equidigital number, since it uses as much as digits as its factorization.

22447489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10030.

The product of its digits is 129024, while the sum is 40.

The square root of 22447489 is about 4737.8781115601. The cubic root of 22447489 is about 282.0910165106.

The spelling of 22447489 in words is "twenty-two million, four hundred forty-seven thousand, four hundred eighty-nine".