4011091 has 12 divisors (see below), whose sum is σ = 4715040. Its totient is φ = 3402000.

The previous prime is 4011061. The next prime is 4011103. The reversal of 4011091 is 1901104.

It is a happy number.

It is not a de Polignac number, because 4011091 - 2¹⁹ = 3486803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4011011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4966 + ... + 5716.

It is an arithmetic number, because the mean of its divisors is an integer number (392920).

Almost surely, 2^4011091 is an apocalyptic number.

4011091 is a deficient number, since it is larger than the sum of its proper divisors (703949).

4011091 is a wasteful number, since it uses less digits than its factorization.

4011091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874 (or 867 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 4011091 is about 2002.7708306244. The cubic root of 4011091 is about 158.8866853457.

Adding to 4011091 its reverse (1901104), we get a palindrome (5912195).

The spelling of 4011091 in words is "four million, eleven thousand, ninety-one".