4092191 has 4 divisors (see below), whose sum is σ = 4104672. Its totient is φ = 4079712.

The previous prime is 4092173. The next prime is 4092197. The reversal of 4092191 is 1912904.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4092191 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 4092191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4092197) 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, 5735 + ... + 6408.

It is an arithmetic number, because the mean of its divisors is an integer number (1026168).

Almost surely, 2^4092191 is an apocalyptic number.

4092191 is a deficient number, since it is larger than the sum of its proper divisors (12481).

4092191 is a wasteful number, since it uses less digits than its factorization.

4092191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12480.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 4092191 is about 2022.9164589770. The cubic root of 4092191 is about 159.9503882641.

The spelling of 4092191 in words is "four million, ninety-two thousand, one hundred ninety-one".