1171983 has 8 divisors (see below), whose sum is σ = 1570096. Its totient is φ = 777600.

The previous prime is 1171981. The next prime is 1171991. The reversal of 1171983 is 3891711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1171983 - 2¹ = 1171981 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1171983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1171981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88 + ... + 1533.

It is an arithmetic number, because the mean of its divisors is an integer number (196262).

2^1171983 is an apocalyptic number.

1171983 is a deficient number, since it is larger than the sum of its proper divisors (398113).

1171983 is a wasteful number, since it uses less digits than its factorization.

1171983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1865.

The product of its digits is 1512, while the sum is 30.

The square root of 1171983 is about 1082.5816366446. The cubic root of 1171983 is about 105.4323218447.

The spelling of 1171983 in words is "one million, one hundred seventy-one thousand, nine hundred eighty-three".