3973191 has 8 divisors (see below), whose sum is σ = 5322240. Its totient is φ = 2636472.

The previous prime is 3973183. The next prime is 3973213. The reversal of 3973191 is 1913793.

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

It is not a de Polignac number, because 3973191 - 2³ = 3973183 is a prime.

3973191 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3973391) 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, 2301 + ... + 3638.

It is an arithmetic number, because the mean of its divisors is an integer number (665280).

Almost surely, 2^3973191 is an apocalyptic number.

3973191 is a deficient number, since it is larger than the sum of its proper divisors (1349049).

3973191 is a wasteful number, since it uses less digits than its factorization.

3973191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6165.

The product of its digits is 5103, while the sum is 33.

The square root of 3973191 is about 1993.2864821696. The cubic root of 3973191 is about 158.3846713179.

The spelling of 3973191 in words is "three million, nine hundred seventy-three thousand, one hundred ninety-one".