223479 has 20 divisors (see below), whose sum is σ = 348480. Its totient is φ = 142560.

The previous prime is 223469. The next prime is 223481. The reversal of 223479 is 974322.

223479 = T₅₂ + T₅₃ + ... + T₁₁₃.

223479 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 223479 - 2⁴ = 223463 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a d-powerful number, because it can be written as 2¹⁵ + 2¹⁷ + 4 + 3⁵ + 7³ + 9⁵ .

223479 is strictly pandigital in base 7.

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 (223429) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2467 + ... + 2555.

It is an arithmetic number, because the mean of its divisors is an integer number (17424).

2²²³⁴⁷⁹ is an apocalyptic number.

223479 is a deficient number, since it is larger than the sum of its proper divisors (125001).

223479 is an equidigital number, since it uses as much as digits as its factorization.

223479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132 (or 123 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 223479 is about 472.7356555201. The cubic root of 223479 is about 60.6846576812.

The spelling of 223479 in words is "two hundred twenty-three thousand, four hundred seventy-nine".