4008091 has 2 divisors, whose sum is σ = 4008092. Its totient is φ = 4008090.

The previous prime is 4008089. The next prime is 4008097. The reversal of 4008091 is 1908004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4008091 - 2¹ = 4008089 is a prime.

Together with 4008089, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (4008097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2004045 + 2004046.

It is an arithmetic number, because the mean of its divisors is an integer number (2004046).

Almost surely, 2^4008091 is an apocalyptic number.

4008091 is a deficient number, since it is larger than the sum of its proper divisors (1).

4008091 is an equidigital number, since it uses as much as digits as its factorization.

4008091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 4008091 is about 2002.0217281538. The cubic root of 4008091 is about 158.8470636284.

The spelling of 4008091 in words is "four million, eight thousand, ninety-one".