13444091 has 4 divisors (see below), whose sum is σ = 13606152. Its totient is φ = 13282032.

The previous prime is 13444087. The next prime is 13444097. The reversal of 13444091 is 19044431.

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 13444091 - 2² = 13444087 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13444091.

It is not an unprimeable number, because it can be changed into a prime (13444097) 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, 80906 + ... + 81071.

It is an arithmetic number, because the mean of its divisors is an integer number (3401538).

Almost surely, 2^13444091 is an apocalyptic number.

13444091 is a deficient number, since it is larger than the sum of its proper divisors (162061).

13444091 is an equidigital number, since it uses as much as digits as its factorization.

13444091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162060.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 13444091 is about 3666.6184693802. The cubic root of 13444091 is about 237.7809992592.

The spelling of 13444091 in words is "thirteen million, four hundred forty-four thousand, ninety-one".