1226749 has 4 divisors (see below), whose sum is σ = 1230336. Its totient is φ = 1223164.

The previous prime is 1226741. The next prime is 1226767. The reversal of 1226749 is 9476221.

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 a cyclic number.

It is not a de Polignac number, because 1226749 - 2³ = 1226741 is a prime.

It is a Duffinian number.

1226749 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1226749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226741) 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, 1219 + ... + 1984.

It is an arithmetic number, because the mean of its divisors is an integer number (307584).

2^1226749 is an apocalyptic number.

It is an amenable number.

1226749 is a deficient number, since it is larger than the sum of its proper divisors (3587).

1226749 is an equidigital number, since it uses as much as digits as its factorization.

1226749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3586.

The product of its digits is 6048, while the sum is 31.

The square root of 1226749 is about 1107.5870168975. The cubic root of 1226749 is about 107.0496465102.

The spelling of 1226749 in words is "one million, two hundred twenty-six thousand, seven hundred forty-nine".