11983191 has 16 divisors (see below), whose sum is σ = 17539200. Its totient is φ = 7217120.

The previous prime is 11983189. The next prime is 11983201. The reversal of 11983191 is 19138911.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11983191 - 2¹ = 11983189 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11985191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4660 + ... + 6758.

It is an arithmetic number, because the mean of its divisors is an integer number (1096200).

Almost surely, 2^11983191 is an apocalyptic number.

11983191 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11983191 is a deficient number, since it is larger than the sum of its proper divisors (5556009).

11983191 is a wasteful number, since it uses less digits than its factorization.

11983191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2286.

The product of its digits is 1944, while the sum is 33.

The square root of 11983191 is about 3461.6745947590. The cubic root of 11983191 is about 228.8359013280.

The spelling of 11983191 in words is "eleven million, nine hundred eighty-three thousand, one hundred ninety-one".