1191996 has 60 divisors (see below), whose sum is σ = 3367672. Its totient is φ = 365472.

The previous prime is 1191991. The next prime is 1192013. The reversal of 1191996 is 6991911.

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 an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1191996.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1191991) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4071 + ... + 4353.

2^1191996 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 1191996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1683836).

1191996 is an abundant number, since it is smaller than the sum of its proper divisors (2175676).

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

1191996 is a wasteful number, since it uses less digits than its factorization.

1191996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312 (or 301 counting only the distinct ones).

The product of its digits is 4374, while the sum is 36.

The square root of 1191996 is about 1091.7856932567. The cubic root of 1191996 is about 106.0290652466.

It can be divided in two parts, 1191 and 996, that added together give a 7-th power (2187 = 3⁷).

The spelling of 1191996 in words is "one million, one hundred ninety-one thousand, nine hundred ninety-six".