222944091 has 4 divisors (see below), whose sum is σ = 297258792. Its totient is φ = 148629392.

The previous prime is 222944089. The next prime is 222944107. The reversal of 222944091 is 190449222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 222944091 - 2¹ = 222944089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222944291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37157346 + ... + 37157351.

It is an arithmetic number, because the mean of its divisors is an integer number (74314698).

Almost surely, 2^222944091 is an apocalyptic number.

222944091 is a deficient number, since it is larger than the sum of its proper divisors (74314701).

222944091 is an equidigital number, since it uses as much as digits as its factorization.

222944091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74314700.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 222944091 is about 14931.3124339423. The cubic root of 222944091 is about 606.3620166982.

The spelling of 222944091 in words is "two hundred twenty-two million, nine hundred forty-four thousand, ninety-one".