1366229 has 4 divisors (see below), whose sum is σ = 1372140. Its totient is φ = 1360320.

The previous prime is 1366213. The next prime is 1366241. The reversal of 1366229 is 9226631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 677329 + 688900 = 823^2 + 830^2 .

It is a cyclic number.

It is not a de Polignac number, because 1366229 - 2⁴ = 1366213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1366279) 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, 2594 + ... + 3075.

It is an arithmetic number, because the mean of its divisors is an integer number (343035).

2^1366229 is an apocalyptic number.

It is an amenable number.

1366229 is a deficient number, since it is larger than the sum of its proper divisors (5911).

1366229 is an equidigital number, since it uses as much as digits as its factorization.

1366229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5910.

The product of its digits is 3888, while the sum is 29.

The square root of 1366229 is about 1168.8579896634. The cubic root of 1366229 is about 110.9620572099.

It can be divided in two parts, 136622 and 9, that added together give a palindrome (136631).

The spelling of 1366229 in words is "one million, three hundred sixty-six thousand, two hundred twenty-nine".