1226917 has 4 divisors (see below), whose sum is σ = 1229580. Its totient is φ = 1224256.

The previous prime is 1226899. The next prime is 1226959. The reversal of 1226917 is 7196221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7196221 = 1627 ⋅4423.

It can be written as a sum of positive squares in 2 ways, for example, as 454276 + 772641 = 674^2 + 879^2 .

It is a cyclic number.

It is not a de Polignac number, because 1226917 - 2⁷ = 1226789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226977) 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, 442 + ... + 1627.

It is an arithmetic number, because the mean of its divisors is an integer number (307395).

2^1226917 is an apocalyptic number.

It is an amenable number.

1226917 is a deficient number, since it is larger than the sum of its proper divisors (2663).

1226917 is an equidigital number, since it uses as much as digits as its factorization.

1226917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2662.

The product of its digits is 1512, while the sum is 28.

The square root of 1226917 is about 1107.6628548435. The cubic root of 1226917 is about 107.0545330082.

The spelling of 1226917 in words is "one million, two hundred twenty-six thousand, nine hundred seventeen".