22889887 has 2 divisors, whose sum is σ = 22889888. Its totient is φ = 22889886.

The previous prime is 22889861. The next prime is 22889897. The reversal of 22889887 is 78898822.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22889887 - 2¹⁵ = 22857119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22889897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11444943 + 11444944.

It is an arithmetic number, because the mean of its divisors is an integer number (11444944).

Almost surely, 2^22889887 is an apocalyptic number.

22889887 is a deficient number, since it is larger than the sum of its proper divisors (1).

22889887 is an equidigital number, since it uses as much as digits as its factorization.

22889887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1032192, while the sum is 52.

The square root of 22889887 is about 4784.3376762097. The cubic root of 22889887 is about 283.9321359701.

The spelling of 22889887 in words is "twenty-two million, eight hundred eighty-nine thousand, eight hundred eighty-seven".