222394839 has 8 divisors (see below), whose sum is σ = 303422592. Its totient is φ = 144815160.

The previous prime is 222394831. The next prime is 222394871. The reversal of 222394839 is 938493222.

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

It is not a de Polignac number, because 222394839 - 2³ = 222394831 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 222394839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222394831) 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, 861867 + ... + 862124.

It is an arithmetic number, because the mean of its divisors is an integer number (37927824).

Almost surely, 2^222394839 is an apocalyptic number.

222394839 is a deficient number, since it is larger than the sum of its proper divisors (81027753).

222394839 is a wasteful number, since it uses less digits than its factorization.

222394839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1724037.

The product of its digits is 186624, while the sum is 42.

The square root of 222394839 is about 14912.9084688400. The cubic root of 222394839 is about 605.8636564377.

The spelling of 222394839 in words is "two hundred twenty-two million, three hundred ninety-four thousand, eight hundred thirty-nine".