9994091 has 2 divisors, whose sum is σ = 9994092. Its totient is φ = 9994090.

The previous prime is 9994043. The next prime is 9994097. The reversal of 9994091 is 1904999.

It is a strong prime.

It is an emirp because it is prime and its reverse (1904999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9994091 - 2⁶ = 9994027 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9994097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4997045 + 4997046.

It is an arithmetic number, because the mean of its divisors is an integer number (4997046).

Almost surely, 2^9994091 is an apocalyptic number.

9994091 is a deficient number, since it is larger than the sum of its proper divisors (1).

9994091 is an equidigital number, since it uses as much as digits as its factorization.

9994091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26244, while the sum is 41.

The square root of 9994091 is about 3161.3432271742. The cubic root of 9994091 is about 215.4010254602.

The spelling of 9994091 in words is "nine million, nine hundred ninety-four thousand, ninety-one".