222931889 has 4 divisors (see below), whose sum is σ = 222964224. Its totient is φ = 222899556.

The previous prime is 222931871. The next prime is 222931901. The reversal of 222931889 is 988139222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 222931889 - 2²⁰ = 221883313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222931859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1217 + ... + 21150.

It is an arithmetic number, because the mean of its divisors is an integer number (55741056).

Almost surely, 2^222931889 is an apocalyptic number.

It is an amenable number.

222931889 is a deficient number, since it is larger than the sum of its proper divisors (32335).

222931889 is an equidigital number, since it uses as much as digits as its factorization.

222931889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32334.

The product of its digits is 124416, while the sum is 44.

The square root of 222931889 is about 14930.9038239485. The cubic root of 222931889 is about 606.3509541873.

The spelling of 222931889 in words is "two hundred twenty-two million, nine hundred thirty-one thousand, eight hundred eighty-nine".