22087799 has 2 divisors, whose sum is σ = 22087800. Its totient is φ = 22087798.

The previous prime is 22087789. The next prime is 22087817. The reversal of 22087799 is 99778022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22087799 - 2⁴ = 22087783 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 (22087759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11043899 + 11043900.

It is an arithmetic number, because the mean of its divisors is an integer number (11043900).

Almost surely, 2^22087799 is an apocalyptic number.

22087799 is a deficient number, since it is larger than the sum of its proper divisors (1).

22087799 is an equidigital number, since it uses as much as digits as its factorization.

22087799 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 22087799 is about 4699.7658452310. The cubic root of 22087799 is about 280.5761901904.

The spelling of 22087799 in words is "twenty-two million, eighty-seven thousand, seven hundred ninety-nine".