222489797 has 4 divisors (see below), whose sum is σ = 222521676. Its totient is φ = 222457920.

The previous prime is 222489793. The next prime is 222489803. The reversal of 222489797 is 797984222.

222489797 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 67387681 + 155102116 = 8209^2 + 12454^2 .

It is a cyclic number.

It is not a de Polignac number, because 222489797 - 2² = 222489793 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 (222489793) 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, 458 + ... + 21099.

It is an arithmetic number, because the mean of its divisors is an integer number (55630419).

Almost surely, 2^222489797 is an apocalyptic number.

It is an amenable number.

222489797 is a deficient number, since it is larger than the sum of its proper divisors (31879).

222489797 is a wasteful number, since it uses less digits than its factorization.

222489797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31878.

The product of its digits is 1016064, while the sum is 50.

The square root of 222489797 is about 14916.0918809184. The cubic root of 222489797 is about 605.9498745877.

The spelling of 222489797 in words is "two hundred twenty-two million, four hundred eighty-nine thousand, seven hundred ninety-seven".