224869 has 2 divisors, whose sum is σ = 224870. Its totient is φ = 224868.

The previous prime is 224863. The next prime is 224881. The reversal of 224869 is 968422.

224869 is nontrivially palindromic in base 15.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 220900 + 3969 = 470^2 + 63^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-224869 is a prime.

It is a super-2 number, since 2×224869² = 101132134322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 224869.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224863) 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 as a sum of consecutive naturals, namely, 112434 + 112435.

It is an arithmetic number, because the mean of its divisors is an integer number (112435).

2²²⁴⁸⁶⁹ is an apocalyptic number.

It is an amenable number.

224869 is a deficient number, since it is larger than the sum of its proper divisors (1).

224869 is an equidigital number, since it uses as much as digits as its factorization.

224869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 31.

The square root of 224869 is about 474.2035427957. The cubic root of 224869 is about 60.8102136869.

The spelling of 224869 in words is "two hundred twenty-four thousand, eight hundred sixty-nine".