22049999 has 2 divisors, whose sum is σ = 22050000. Its totient is φ = 22049998.

The previous prime is 22049983. The next prime is 22050001. The reversal of 22049999 is 99994022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22049999 - 2⁴ = 22049983 is a prime.

It is a Sophie Germain prime.

Together with 22050001, it forms a pair of twin primes.

It is a Chen prime.

22049999 is a modest number, since divided by 9999 gives 2204 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22049099) 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, 11024999 + 11025000.

It is an arithmetic number, because the mean of its divisors is an integer number (11025000).

Almost surely, 2^22049999 is an apocalyptic number.

22049999 is a deficient number, since it is larger than the sum of its proper divisors (1).

22049999 is an equidigital number, since it uses as much as digits as its factorization.

22049999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 22049999 is about 4695.7426462701. The cubic root of 22049999 is about 280.4160439211.

The spelling of 22049999 in words is "twenty-two million, forty-nine thousand, nine hundred ninety-nine".