222343891 has 8 divisors (see below), whose sum is σ = 277208064. Its totient is φ = 173254920.

The previous prime is 222343879. The next prime is 222343897. The reversal of 222343891 is 198343222.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 222343891 - 2⁷ = 222343763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222343897) 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 in 7 ways as a sum of consecutive naturals, for example, 1443715 + ... + 1443868.

It is an arithmetic number, because the mean of its divisors is an integer number (34651008).

Almost surely, 2^222343891 is an apocalyptic number.

222343891 is a deficient number, since it is larger than the sum of its proper divisors (54864173).

222343891 is a wasteful number, since it uses less digits than its factorization.

222343891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2887601.

The product of its digits is 20736, while the sum is 34.

The square root of 222343891 is about 14911.2001864370. The cubic root of 222343891 is about 605.8173875298.

The spelling of 222343891 in words is "two hundred twenty-two million, three hundred forty-three thousand, eight hundred ninety-one".