1116891 has 12 divisors (see below), whose sum is σ = 1624168. Its totient is φ = 739584.

The previous prime is 1116889. The next prime is 1116893. The reversal of 1116891 is 1986111.

It is an interprime number because it is at equal distance from previous prime (1116889) and next prime (1116893).

It is not a de Polignac number, because 1116891 - 2¹ = 1116889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1116893) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1416 + ... + 2058.

2^1116891 is an apocalyptic number.

1116891 is a deficient number, since it is larger than the sum of its proper divisors (507277).

1116891 is a wasteful number, since it uses less digits than its factorization.

1116891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842 (or 839 counting only the distinct ones).

The product of its digits is 432, while the sum is 27.

The square root of 1116891 is about 1056.8306392228. The cubic root of 1116891 is about 103.7537009373.

The spelling of 1116891 in words is "one million, one hundred sixteen thousand, eight hundred ninety-one".