13916491 has 4 divisors (see below), whose sum is σ = 14396400. Its totient is φ = 13436584.

The previous prime is 13916473. The next prime is 13916519. The reversal of 13916491 is 19461931.

It is a happy number.

13916491 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.

It is a cyclic number.

It is not a de Polignac number, because 13916491 - 2⁵ = 13916459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13916401) 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, 239911 + ... + 239968.

It is an arithmetic number, because the mean of its divisors is an integer number (3599100).

Almost surely, 2^13916491 is an apocalyptic number.

13916491 is a deficient number, since it is larger than the sum of its proper divisors (479909).

13916491 is an equidigital number, since it uses as much as digits as its factorization.

13916491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479908.

The product of its digits is 5832, while the sum is 34.

The square root of 13916491 is about 3730.4813362353. The cubic root of 13916491 is about 240.5340595461.

The spelling of 13916491 in words is "thirteen million, nine hundred sixteen thousand, four hundred ninety-one".