222439 has 8 divisors (see below), whose sum is σ = 260480. Its totient is φ = 185976.

The previous prime is 222437. The next prime is 222461. The reversal of 222439 is 934222.

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

It is not a de Polignac number, because 222439 - 2¹ = 222437 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69 + ... + 670.

It is an arithmetic number, because the mean of its divisors is an integer number (32560).

2²²²⁴³⁹ is an apocalyptic number.

222439 is a deficient number, since it is larger than the sum of its proper divisors (38041).

222439 is an equidigital number, since it uses as much as digits as its factorization.

222439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789.

The product of its digits is 864, while the sum is 22.

The square root of 222439 is about 471.6343922998. The cubic root of 222439 is about 60.5903755951.

It can be divided in two parts, 2224 and 39, that multiplied together give a triangular number (86736 = T₄₁₆).

The spelling of 222439 in words is "two hundred twenty-two thousand, four hundred thirty-nine".