10002091 has 4 divisors (see below), whose sum is σ = 10911384. Its totient is φ = 9092800.

The previous prime is 10002077. The next prime is 10002121. The reversal of 10002091 is 19020001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10002091 - 2⁵ = 10002059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10002061) 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, 454630 + ... + 454651.

It is an arithmetic number, because the mean of its divisors is an integer number (2727846).

Almost surely, 2^10002091 is an apocalyptic number.

10002091 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10002091 is a deficient number, since it is larger than the sum of its proper divisors (909293).

10002091 is an equidigital number, since it uses as much as digits as its factorization.

10002091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909292.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 10002091 is about 3162.6082590166. The cubic root of 10002091 is about 215.4584843665.

Adding to 10002091 its reverse (19020001), we get a palindrome (29022092).

The spelling of 10002091 in words is "ten million, two thousand, ninety-one".