1226839 has 4 divisors (see below), whose sum is σ = 1299024. Its totient is φ = 1154656.

The previous prime is 1226831. The next prime is 1226851. The reversal of 1226839 is 9386221.

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

It is a cyclic number.

It is not a de Polignac number, because 1226839 - 2³ = 1226831 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1226839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226831) 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, 36067 + ... + 36100.

It is an arithmetic number, because the mean of its divisors is an integer number (324756).

2^1226839 is an apocalyptic number.

1226839 is a deficient number, since it is larger than the sum of its proper divisors (72185).

1226839 is an equidigital number, since it uses as much as digits as its factorization.

1226839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72184.

The product of its digits is 5184, while the sum is 31.

The square root of 1226839 is about 1107.6276450143. The cubic root of 1226839 is about 107.0522643324.

The spelling of 1226839 in words is "one million, two hundred twenty-six thousand, eight hundred thirty-nine".