22247889 has 4 divisors (see below), whose sum is σ = 29663856. Its totient is φ = 14831924.

The previous prime is 22247867. The next prime is 22247891. The reversal of 22247889 is 98874222.

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.

It is a cyclic number.

It is not a de Polignac number, because 22247889 - 2¹¹ = 22245841 is a prime.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 22247889.

It is not an unprimeable number, because it can be changed into a prime (22247839) 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, 3707979 + ... + 3707984.

It is an arithmetic number, because the mean of its divisors is an integer number (7415964).

Almost surely, 2^22247889 is an apocalyptic number.

It is an amenable number.

22247889 is a deficient number, since it is larger than the sum of its proper divisors (7415967).

22247889 is an equidigital number, since it uses as much as digits as its factorization.

22247889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7415966.

The product of its digits is 129024, while the sum is 42.

The square root of 22247889 is about 4716.7667951681. The cubic root of 22247889 is about 281.2524211150.

The spelling of 22247889 in words is "twenty-two million, two hundred forty-seven thousand, eight hundred eighty-nine".