22889861 has 2 divisors, whose sum is σ = 22889862. Its totient is φ = 22889860.

The previous prime is 22889843. The next prime is 22889887. The reversal of 22889861 is 16898822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22372900 + 516961 = 4730^2 + 719^2 .

It is a cyclic number.

It is not a de Polignac number, because 22889861 - 2¹⁰ = 22888837 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22889831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11444930 + 11444931.

It is an arithmetic number, because the mean of its divisors is an integer number (11444931).

Almost surely, 2^22889861 is an apocalyptic number.

It is an amenable number.

22889861 is a deficient number, since it is larger than the sum of its proper divisors (1).

22889861 is an equidigital number, since it uses as much as digits as its factorization.

22889861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 110592, while the sum is 44.

The square root of 22889861 is about 4784.3349590095. The cubic root of 22889861 is about 283.9320284664.

The spelling of 22889861 in words is "twenty-two million, eight hundred eighty-nine thousand, eight hundred sixty-one".