9993091 has 2 divisors, whose sum is σ = 9993092. Its totient is φ = 9993090.

The previous prime is 9993089. The next prime is 9993103. The reversal of 9993091 is 1903999.

9993091 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9993091 - 2¹ = 9993089 is a prime.

Together with 9993089, it forms a pair of twin primes.

9993091 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (9994091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4996545 + 4996546.

It is an arithmetic number, because the mean of its divisors is an integer number (4996546).

Almost surely, 2^9993091 is an apocalyptic number.

9993091 is a deficient number, since it is larger than the sum of its proper divisors (1).

9993091 is an equidigital number, since it uses as much as digits as its factorization.

9993091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19683, while the sum is 40.

The square root of 9993091 is about 3161.1850625992. The cubic root of 9993091 is about 215.3938409412.

The spelling of 9993091 in words is "nine million, nine hundred ninety-three thousand, ninety-one".