222409979 has 12 divisors (see below), whose sum is σ = 246901200. Its totient is φ = 200178000.

The previous prime is 222409951. The next prime is 222409981. The reversal of 222409979 is 979904222.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-222409979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222409939) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3122 + ... + 21320.

It is an arithmetic number, because the mean of its divisors is an integer number (20575100).

Almost surely, 2^222409979 is an apocalyptic number.

222409979 is a deficient number, since it is larger than the sum of its proper divisors (24491221).

222409979 is a wasteful number, since it uses less digits than its factorization.

222409979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18322 (or 18311 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 222409979 is about 14913.4160741260. The cubic root of 222409979 is about 605.8774046099.

The spelling of 222409979 in words is "two hundred twenty-two million, four hundred nine thousand, nine hundred seventy-nine".