22284979 has 2 divisors, whose sum is σ = 22284980. Its totient is φ = 22284978.

The previous prime is 22284971. The next prime is 22284991. The reversal of 22284979 is 97948222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22284979 - 2³ = 22284971 is a prime.

It is not a weakly prime, because it can be changed into another prime (22284971) 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, 11142489 + 11142490.

It is an arithmetic number, because the mean of its divisors is an integer number (11142490).

Almost surely, 2^22284979 is an apocalyptic number.

22284979 is a deficient number, since it is larger than the sum of its proper divisors (1).

22284979 is an equidigital number, since it uses as much as digits as its factorization.

22284979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 43.

The square root of 22284979 is about 4720.6968765215. The cubic root of 22284979 is about 281.4086286051.

The spelling of 22284979 in words is "twenty-two million, two hundred eighty-four thousand, nine hundred seventy-nine".