12893091 has 4 divisors (see below), whose sum is σ = 17190792. Its totient is φ = 8595392.

The previous prime is 12893071. The next prime is 12893099. The reversal of 12893091 is 19039821.

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 12893091 - 2¹⁰ = 12892067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12893099) 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, 2148846 + ... + 2148851.

It is an arithmetic number, because the mean of its divisors is an integer number (4297698).

Almost surely, 2^12893091 is an apocalyptic number.

12893091 is a deficient number, since it is larger than the sum of its proper divisors (4297701).

12893091 is an equidigital number, since it uses as much as digits as its factorization.

12893091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4297700.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 12893091 is about 3590.6950580633. The cubic root of 12893091 is about 234.4871326191.

The spelling of 12893091 in words is "twelve million, eight hundred ninety-three thousand, ninety-one".