1223579 has 6 divisors (see below), whose sum is σ = 1423404. Its totient is φ = 1048740.

The previous prime is 1223569. The next prime is 1223587. The reversal of 1223579 is 9753221.

1223579 is nontrivially palindromic in base 3.

It is not a de Polignac number, because 1223579 - 2⁸ = 1223323 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1223549) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12437 + ... + 12534.

It is an arithmetic number, because the mean of its divisors is an integer number (237234).

2^1223579 is an apocalyptic number.

1223579 is a deficient number, since it is larger than the sum of its proper divisors (199825).

1223579 is an equidigital number, since it uses as much as digits as its factorization.

1223579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24985 (or 24978 counting only the distinct ones).

The product of its digits is 3780, while the sum is 29.

The square root of 1223579 is about 1106.1550524226. The cubic root of 1223579 is about 106.9573591994.

The spelling of 1223579 in words is "one million, two hundred twenty-three thousand, five hundred seventy-nine".