4091145 has 16 divisors (see below), whose sum is σ = 6609600. Its totient is φ = 2160704.

The previous prime is 4091083. The next prime is 4091161. The reversal of 4091145 is 5411904.

It is a cyclic number.

It is not a de Polignac number, because 4091145 - 2⁶ = 4091081 is a prime.

It is a super-3 number, since 3×4091145³ (a number of 21 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 331 + ... + 2879.

It is an arithmetic number, because the mean of its divisors is an integer number (413100).

Almost surely, 2^4091145 is an apocalyptic number.

It is an amenable number.

4091145 is a deficient number, since it is larger than the sum of its proper divisors (2518455).

4091145 is a wasteful number, since it uses less digits than its factorization.

4091145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2664.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 4091145 is about 2022.6579048371. The cubic root of 4091145 is about 159.9367588609.

The spelling of 4091145 in words is "four million, ninety-one thousand, one hundred forty-five".