1226109 has 4 divisors (see below), whose sum is σ = 1634816. Its totient is φ = 817404.

The previous prime is 1226101. The next prime is 1226111. The reversal of 1226109 is 9016221.

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 1226109 - 2³ = 1226101 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

1226109 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204349 + ... + 204354.

It is an arithmetic number, because the mean of its divisors is an integer number (408704).

2^1226109 is an apocalyptic number.

It is an amenable number.

1226109 is a deficient number, since it is larger than the sum of its proper divisors (408707).

1226109 is an equidigital number, since it uses as much as digits as its factorization.

1226109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408706.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 1226109 is about 1107.2980628539. The cubic root of 1226109 is about 107.0310271915.

The spelling of 1226109 in words is "one million, two hundred twenty-six thousand, one hundred nine".