4091906 has 16 divisors (see below), whose sum is σ = 7554624. Its totient is φ = 1618704.

The previous prime is 4091873. The next prime is 4091909. The reversal of 4091906 is 6091904.

It is not an unprimeable number, because it can be changed into a prime (4091909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11060 + ... + 11423.

It is an arithmetic number, because the mean of its divisors is an integer number (472164).

Almost surely, 2^4091906 is an apocalyptic number.

4091906 is a deficient number, since it is larger than the sum of its proper divisors (3462718).

4091906 is a wasteful number, since it uses less digits than its factorization.

4091906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22505.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 4091906 is about 2022.8460149008. The cubic root of 4091906 is about 159.9466749380.

The spelling of 4091906 in words is "four million, ninety-one thousand, nine hundred six".