1139844 has 36 divisors (see below), whose sum is σ = 2780624. Its totient is φ = 363216.

The previous prime is 1139843. The next prime is 1139849. The reversal of 1139844 is 4489311.

It is a happy number.

Its product of digits (3456) is a multiple of the sum of its prime factors (144).

It is not an unprimeable number, because it can be changed into a prime (1139843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24229 + ... + 24275.

2^1139844 is an apocalyptic number.

It is an amenable number.

1139844 is an abundant number, since it is smaller than the sum of its proper divisors (1640780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1139844 is a wasteful number, since it uses less digits than its factorization.

1139844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144 (or 95 counting only the distinct ones).

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

The square root of 1139844 is about 1067.6347690105. The cubic root of 1139844 is about 104.4596274224.

The spelling of 1139844 in words is "one million, one hundred thirty-nine thousand, eight hundred forty-four".