222285389 has 6 divisors (see below), whose sum is σ = 234600750. Its totient is φ = 210585816.

The previous prime is 222285379. The next prime is 222285397. The reversal of 222285389 is 983582222.

It can be written as a sum of positive squares in only one way, i.e., 220760164 + 1525225 = 14858^2 + 1235^2 .

It is a de Polignac number, because none of the positive numbers 2^k-222285389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222285379) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 307514 + ... + 308235.

It is an arithmetic number, because the mean of its divisors is an integer number (39100125).

Almost surely, 2^222285389 is an apocalyptic number.

It is an amenable number.

222285389 is a deficient number, since it is larger than the sum of its proper divisors (12315361).

222285389 is an equidigital number, since it uses as much as digits as its factorization.

222285389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615787 (or 615768 counting only the distinct ones).

The product of its digits is 138240, while the sum is 41.

The square root of 222285389 is about 14909.2383775966. The cubic root of 222285389 is about 605.7642496668.

The spelling of 222285389 in words is "two hundred twenty-two million, two hundred eighty-five thousand, three hundred eighty-nine".