13443091 has 4 divisors (see below), whose sum is σ = 13671000. Its totient is φ = 13215184.

The previous prime is 13443071. The next prime is 13443097. The reversal of 13443091 is 19034431.

It is a happy number.

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 13443091 - 2⁷ = 13442963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13443097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113866 + ... + 113983.

It is an arithmetic number, because the mean of its divisors is an integer number (3417750).

Almost surely, 2^13443091 is an apocalyptic number.

13443091 is a deficient number, since it is larger than the sum of its proper divisors (227909).

13443091 is an equidigital number, since it uses as much as digits as its factorization.

13443091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227908.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 13443091 is about 3666.4821014155. The cubic root of 13443091 is about 237.7751035614.

The spelling of 13443091 in words is "thirteen million, four hundred forty-three thousand, ninety-one".