22437889 has 2 divisors, whose sum is σ = 22437890. Its totient is φ = 22437888.

The previous prime is 22437887. The next prime is 22437911. The reversal of 22437889 is 98873422.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17707264 + 4730625 = 4208^2 + 2175^2 .

It is a cyclic number.

It is not a de Polignac number, because 22437889 - 2¹ = 22437887 is a prime.

Together with 22437887, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (22437881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11218944 + 11218945.

It is an arithmetic number, because the mean of its divisors is an integer number (11218945).

It is a Proth number, since it is equal to 2739 ⋅ 2¹³ + 1 and 2739 < 2¹³.

Almost surely, 2^22437889 is an apocalyptic number.

It is an amenable number.

22437889 is a deficient number, since it is larger than the sum of its proper divisors (1).

22437889 is an equidigital number, since it uses as much as digits as its factorization.

22437889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 43.

The square root of 22437889 is about 4736.8648914657. The cubic root of 22437889 is about 282.0507973143.

The spelling of 22437889 in words is "twenty-two million, four hundred thirty-seven thousand, eight hundred eighty-nine".