1144891 has 16 divisors (see below), whose sum is σ = 1340640. Its totient is φ = 967680.

The previous prime is 1144889. The next prime is 1144901. The reversal of 1144891 is 1984411.

It is a cyclic number.

It is not a de Polignac number, because 1144891 - 2¹ = 1144889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1144291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11755 + ... + 11851.

It is an arithmetic number, because the mean of its divisors is an integer number (83790).

2^1144891 is an apocalyptic number.

1144891 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1144891 is a deficient number, since it is larger than the sum of its proper divisors (195749).

1144891 is a wasteful number, since it uses less digits than its factorization.

1144891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174.

The product of its digits is 1152, while the sum is 28.

The square root of 1144891 is about 1069.9957943843. The cubic root of 1144891 is about 104.6135758354.

It can be divided in two parts, 114 and 4891, that added together give a palindrome (5005).

The spelling of 1144891 in words is "one million, one hundred forty-four thousand, eight hundred ninety-one".