4197191 has 4 divisors (see below), whose sum is σ = 4250400. Its totient is φ = 4143984.

The previous prime is 4197163. The next prime is 4197197. The reversal of 4197191 is 1917914.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1917914 = 2 ⋅958957.

It is a cyclic number.

It is not a de Polignac number, because 4197191 - 2¹⁰ = 4196167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4197197) 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, 26486 + ... + 26643.

It is an arithmetic number, because the mean of its divisors is an integer number (1062600).

Almost surely, 2^4197191 is an apocalyptic number.

4197191 is a deficient number, since it is larger than the sum of its proper divisors (53209).

4197191 is an equidigital number, since it uses as much as digits as its factorization.

4197191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53208.

The product of its digits is 2268, while the sum is 32.

The square root of 4197191 is about 2048.7047127392. The cubic root of 4197191 is about 161.3068873658.

The spelling of 4197191 in words is "four million, one hundred ninety-seven thousand, one hundred ninety-one".