222888897 has 54 divisors (see below), whose sum is σ = 411754434. Its totient is φ = 115758720.

The previous prime is 222888893. The next prime is 222888907. The reversal of 222888897 is 798888222.

It can be written as a sum of positive squares in only one way, i.e., 218566656 + 4322241 = 14784^2 + 2079^2 .

It is not a de Polignac number, because 222888897 - 2² = 222888893 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222888893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 51273 + ... + 55449.

Almost surely, 2^222888897 is an apocalyptic number.

It is an amenable number.

222888897 is a deficient number, since it is larger than the sum of its proper divisors (188865537).

222888897 is a wasteful number, since it uses less digits than its factorization.

222888897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4219 (or 4198 counting only the distinct ones).

The product of its digits is 2064384, while the sum is 54.

The square root of 222888897 is about 14929.4640560202. The cubic root of 222888897 is about 606.3119737970.

It can be divided in two parts, 2228 and 88897, that added together give a cube (91125 = 45³).

The spelling of 222888897 in words is "two hundred twenty-two million, eight hundred eighty-eight thousand, eight hundred ninety-seven".