1226829 has 4 divisors (see below), whose sum is σ = 1635776. Its totient is φ = 817884.

The previous prime is 1226821. The next prime is 1226831. The reversal of 1226829 is 9286221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1226829 - 2³ = 1226821 is a prime.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1226796 and 1226805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204469 + ... + 204474.

It is an arithmetic number, because the mean of its divisors is an integer number (408944).

2^1226829 is an apocalyptic number.

It is an amenable number.

1226829 is a deficient number, since it is larger than the sum of its proper divisors (408947).

1226829 is an equidigital number, since it uses as much as digits as its factorization.

1226829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408946.

The product of its digits is 3456, while the sum is 30.

The square root of 1226829 is about 1107.6231308527. The cubic root of 1226829 is about 107.0519734696.

The spelling of 1226829 in words is "one million, two hundred twenty-six thousand, eight hundred twenty-nine".