22086779 has 18 divisors (see below), whose sum is σ = 26332236. Its totient is φ = 18364320.

The previous prime is 22086767. The next prime is 22086793. The reversal of 22086779 is 97768022.

It is not a de Polignac number, because 22086779 - 2⁴ = 22086763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22086079) 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 in 17 ways as a sum of consecutive naturals, for example, 202577 + ... + 202685.

It is an arithmetic number, because the mean of its divisors is an integer number (1462902).

Almost surely, 2^22086779 is an apocalyptic number.

22086779 is a deficient number, since it is larger than the sum of its proper divisors (4245457).

22086779 is a wasteful number, since it uses less digits than its factorization.

22086779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255 (or 133 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 22086779 is about 4699.6573279336. The cubic root of 22086779 is about 280.5718711828.

The spelling of 22086779 in words is "twenty-two million, eighty-six thousand, seven hundred seventy-nine".