1189944 has 64 divisors (see below), whose sum is σ = 3782400. Its totient is φ = 339552.

The previous prime is 1189933. The next prime is 1189967. The reversal of 1189944 is 4499811.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1189899 and 1189908.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1119 + ... + 1905.

It is an arithmetic number, because the mean of its divisors is an integer number (59100).

2^1189944 is an apocalyptic number.

1189944 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1189944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1891200).

1189944 is an abundant number, since it is smaller than the sum of its proper divisors (2592456).

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

1189944 is a wasteful number, since it uses less digits than its factorization.

1189944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809 (or 799 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 1189944 is about 1090.8455436037. The cubic root of 1189944 is about 105.9681879142.

The spelling of 1189944 in words is "one million, one hundred eighty-nine thousand, nine hundred forty-four".