7983191 has 4 divisors (see below), whose sum is σ = 8014512. Its totient is φ = 7951872.

The previous prime is 7983181. The next prime is 7983223. The reversal of 7983191 is 1913897.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1913897 = 83 ⋅23059.

It is a cyclic number.

It is not a de Polignac number, because 7983191 - 2¹⁴ = 7966807 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7983121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15275 + ... + 15788.

It is an arithmetic number, because the mean of its divisors is an integer number (2003628).

Almost surely, 2^7983191 is an apocalyptic number.

7983191 is a deficient number, since it is larger than the sum of its proper divisors (31321).

7983191 is a wasteful number, since it uses less digits than its factorization.

7983191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31320.

The product of its digits is 13608, while the sum is 38.

The square root of 7983191 is about 2825.4541227916. The cubic root of 7983191 is about 199.8598267803.

The spelling of 7983191 in words is "seven million, nine hundred eighty-three thousand, one hundred ninety-one".