4091934 has 64 divisors (see below), whose sum is σ = 10824192. Its totient is φ = 998400.

The previous prime is 4091933. The next prime is 4091947. The reversal of 4091934 is 4391904.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4091933) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7594 + ... + 8114.

It is an arithmetic number, because the mean of its divisors is an integer number (169128).

Almost surely, 2^4091934 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4091934, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5412096).

4091934 is an abundant number, since it is smaller than the sum of its proper divisors (6732258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4091934 is a wasteful number, since it uses less digits than its factorization.

4091934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 4091934 is about 2022.8529358310. The cubic root of 4091934 is about 159.9470397637.

Subtracting from 4091934 its sum of digits (30), we obtain a palindrome (4091904).

The spelling of 4091934 in words is "four million, ninety-one thousand, nine hundred thirty-four".