1171993 has 4 divisors (see below), whose sum is σ = 1191268. Its totient is φ = 1152720.

The previous prime is 1171991. The next prime is 1171999. The reversal of 1171993 is 3991711.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 582169 + 589824 = 763^2 + 768^2 .

It is a cyclic number.

It is not a de Polignac number, because 1171993 - 2¹ = 1171991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1171991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9546 + ... + 9667.

It is an arithmetic number, because the mean of its divisors is an integer number (297817).

2^1171993 is an apocalyptic number.

It is an amenable number.

1171993 is a deficient number, since it is larger than the sum of its proper divisors (19275).

1171993 is an equidigital number, since it uses as much as digits as its factorization.

1171993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19274.

The product of its digits is 1701, while the sum is 31.

The square root of 1171993 is about 1082.5862552240. The cubic root of 1171993 is about 105.4326217126.

The spelling of 1171993 in words is "one million, one hundred seventy-one thousand, nine hundred ninety-three".