222318469 has 4 divisors (see below), whose sum is σ = 235396044. Its totient is φ = 209240896.

The previous prime is 222318457. The next prime is 222318479. The reversal of 222318469 is 964813222.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 186677569 + 35640900 = 13663^2 + 5970^2 .

It is a de Polignac number, because none of the positive numbers 2^k-222318469 is a prime.

It is a super-2 number, since 2×222318469² = 98851003317007922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222318479) 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, 6538762 + ... + 6538795.

It is an arithmetic number, because the mean of its divisors is an integer number (58849011).

Almost surely, 2^222318469 is an apocalyptic number.

It is an amenable number.

222318469 is a deficient number, since it is larger than the sum of its proper divisors (13077575).

222318469 is a wasteful number, since it uses less digits than its factorization.

222318469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13077574.

The product of its digits is 41472, while the sum is 37.

The square root of 222318469 is about 14910.3477155967. The cubic root of 222318469 is about 605.7942976568.

The spelling of 222318469 in words is "two hundred twenty-two million, three hundred eighteen thousand, four hundred sixty-nine".