13719091 has 4 divisors (see below), whose sum is σ = 13726800. Its totient is φ = 13711384.

The previous prime is 13719071. The next prime is 13719113. The reversal of 13719091 is 19091731.

13719091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13719091 - 2¹³ = 13710899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13719071) 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, 330 + ... + 5248.

It is an arithmetic number, because the mean of its divisors is an integer number (3431700).

Almost surely, 2^13719091 is an apocalyptic number.

13719091 is a deficient number, since it is larger than the sum of its proper divisors (7709).

13719091 is an equidigital number, since it uses as much as digits as its factorization.

13719091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7708.

The product of its (nonzero) digits is 1701, while the sum is 31.

The square root of 13719091 is about 3703.9291299916. The cubic root of 13719091 is about 239.3913454515.

It can be divided in two parts, 13 and 719091, that added together give a square (719104 = 848²).

The spelling of 13719091 in words is "thirteen million, seven hundred nineteen thousand, ninety-one".