1189916 has 36 divisors (see below), whose sum is σ = 2614248. Its totient is φ = 469728.

The previous prime is 1189907. The next prime is 1189919. The reversal of 1189916 is 6199811.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1189919) 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, 2315 + ... + 2781.

It is an arithmetic number, because the mean of its divisors is an integer number (72618).

2^1189916 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1189916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1307124).

1189916 is an abundant number, since it is smaller than the sum of its proper divisors (1424332).

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

1189916 is a wasteful number, since it uses less digits than its factorization.

1189916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498 (or 489 counting only the distinct ones).

The product of its digits is 3888, while the sum is 35.

The square root of 1189916 is about 1090.8327094472. The cubic root of 1189916 is about 105.9673567456.

The spelling of 1189916 in words is "one million, one hundred eighty-nine thousand, nine hundred sixteen".