222469 has 8 divisors (see below), whose sum is σ = 243320. Its totient is φ = 202176.

The previous prime is 222461. The next prime is 222493. The reversal of 222469 is 964222.

It can be written as a sum of positive squares in 4 ways, for example, as 8100 + 214369 = 90^2 + 463^2 .

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

It is not a de Polignac number, because 222469 - 2³ = 222461 is a prime.

It is a super-2 number, since 2×222469² = 98984911922, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222461) 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, 1339 + ... + 1495.

It is an arithmetic number, because the mean of its divisors is an integer number (30415).

2²²²⁴⁶⁹ is an apocalyptic number.

It is an amenable number.

222469 is a deficient number, since it is larger than the sum of its proper divisors (20851).

222469 is a wasteful number, since it uses less digits than its factorization.

222469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279.

The product of its digits is 1728, while the sum is 25.

The square root of 222469 is about 471.6661955239. Note that the first 3 decimals coincide. The cubic root of 222469 is about 60.5930993823.

The spelling of 222469 in words is "two hundred twenty-two thousand, four hundred sixty-nine".