222618839 has 8 divisors (see below), whose sum is σ = 234474240. Its totient is φ = 210777336.

The previous prime is 222618833. The next prime is 222618857. The reversal of 222618839 is 938816222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-222618839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222618796 and 222618805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222618833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53612 + ... + 57614.

It is an arithmetic number, because the mean of its divisors is an integer number (29309280).

Almost surely, 2^222618839 is an apocalyptic number.

222618839 is a deficient number, since it is larger than the sum of its proper divisors (11855401).

222618839 is a wasteful number, since it uses less digits than its factorization.

222618839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6949.

The product of its digits is 82944, while the sum is 41.

The square root of 222618839 is about 14920.4168507452. The cubic root of 222618839 is about 606.0670003654.

The spelling of 222618839 in words is "two hundred twenty-two million, six hundred eighteen thousand, eight hundred thirty-nine".