222549999 has 8 divisors (see below), whose sum is σ = 339123840. Its totient is φ = 127171416.

The previous prime is 222549989. The next prime is 222550019. The reversal of 222549999 is 999945222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 222549999 - 2⁷ = 222549871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222549919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5298789 + ... + 5298830.

It is an arithmetic number, because the mean of its divisors is an integer number (42390480).

Almost surely, 2^222549999 is an apocalyptic number.

222549999 is a deficient number, since it is larger than the sum of its proper divisors (116573841).

222549999 is a wasteful number, since it uses less digits than its factorization.

222549999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10597629.

The product of its digits is 1049760, while the sum is 51.

The square root of 222549999 is about 14918.1097663209. The cubic root of 222549999 is about 606.0045229433.

The spelling of 222549999 in words is "two hundred twenty-two million, five hundred forty-nine thousand, nine hundred ninety-nine".