222439645 has 16 divisors (see below), whose sum is σ = 289206720. Its totient is φ = 163586304.

The previous prime is 222439643. The next prime is 222439667. The reversal of 222439645 is 546934222.

It is a cyclic number.

It is not a de Polignac number, because 222439645 - 2¹ = 222439643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222439643) 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 15 ways as a sum of consecutive naturals, for example, 26775 + ... + 34084.

It is an arithmetic number, because the mean of its divisors is an integer number (18075420).

Almost surely, 2^222439645 is an apocalyptic number.

It is an amenable number.

222439645 is a deficient number, since it is larger than the sum of its proper divisors (66767075).

222439645 is a wasteful number, since it uses less digits than its factorization.

222439645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60924.

The product of its digits is 103680, while the sum is 37.

The square root of 222439645 is about 14914.4106487652. The cubic root of 222439645 is about 605.9043415907.

The spelling of 222439645 in words is "two hundred twenty-two million, four hundred thirty-nine thousand, six hundred forty-five".