222429 has 4 divisors (see below), whose sum is σ = 296576. Its totient is φ = 148284.

The previous prime is 222419. The next prime is 222437. The reversal of 222429 is 924222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 222429 - 2¹³ = 214237 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222419) 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 3 ways as a sum of consecutive naturals, for example, 37069 + ... + 37074.

It is an arithmetic number, because the mean of its divisors is an integer number (74144).

2²²²⁴²⁹ is an apocalyptic number.

It is an amenable number.

222429 is a deficient number, since it is larger than the sum of its proper divisors (74147).

222429 is an equidigital number, since it uses as much as digits as its factorization.

222429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74146.

The product of its digits is 576, while the sum is 21.

The square root of 222429 is about 471.6237907485. The cubic root of 222429 is about 60.5894676116.

The spelling of 222429 in words is "two hundred twenty-two thousand, four hundred twenty-nine".