4099181 has 4 divisors (see below), whose sum is σ = 4103232. Its totient is φ = 4095132.

The previous prime is 4099171. The next prime is 4099187. The reversal of 4099181 is 1819904.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 4099181 - 2¹⁴ = 4082797 is a prime.

It is a super-2 number, since 2×4099181² = 33606569741522, which contains 22 as substring.

It is a Duffinian 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 (4099187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 956 + ... + 3018.

It is an arithmetic number, because the mean of its divisors is an integer number (1025808).

Almost surely, 2^4099181 is an apocalyptic number.

It is an amenable number.

4099181 is a deficient number, since it is larger than the sum of its proper divisors (4051).

4099181 is a wasteful number, since it uses less digits than its factorization.

4099181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4050.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 4099181 is about 2024.6434253962. The cubic root of 4099181 is about 160.0414085532.

The spelling of 4099181 in words is "four million, ninety-nine thousand, one hundred eighty-one".