1226289 has 4 divisors (see below), whose sum is σ = 1635056. Its totient is φ = 817524.

The previous prime is 1226263. The next prime is 1226293. The reversal of 1226289 is 9826221.

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 1226289 - 2⁵ = 1226257 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1226209) 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, 204379 + ... + 204384.

It is an arithmetic number, because the mean of its divisors is an integer number (408764).

2^1226289 is an apocalyptic number.

It is an amenable number.

1226289 is a deficient number, since it is larger than the sum of its proper divisors (408767).

1226289 is an equidigital number, since it uses as much as digits as its factorization.

1226289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408766.

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

The square root of 1226289 is about 1107.3793387995. The cubic root of 1226289 is about 107.0362645297.

The spelling of 1226289 in words is "one million, two hundred twenty-six thousand, two hundred eighty-nine".