22079887 has 2 divisors, whose sum is σ = 22079888. Its totient is φ = 22079886.

The previous prime is 22079857. The next prime is 22079891. The reversal of 22079887 is 78897022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22079887 - 2¹⁵ = 22047119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22079857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11039943 + 11039944.

It is an arithmetic number, because the mean of its divisors is an integer number (11039944).

Almost surely, 2^22079887 is an apocalyptic number.

22079887 is a deficient number, since it is larger than the sum of its proper divisors (1).

22079887 is an equidigital number, since it uses as much as digits as its factorization.

22079887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112896, while the sum is 43.

The square root of 22079887 is about 4698.9240257744. The cubic root of 22079887 is about 280.5426847556.

The spelling of 22079887 in words is "twenty-two million, seventy-nine thousand, eight hundred eighty-seven".