13789491 has 4 divisors (see below), whose sum is σ = 18385992. Its totient is φ = 9192992.

The previous prime is 13789469. The next prime is 13789543. The reversal of 13789491 is 19498731.

It is a happy number.

13789491 is digitally balanced in base 2 and base 4, because in such bases 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 13789491 - 2⁹ = 13788979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13789441) 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, 2298246 + ... + 2298251.

It is an arithmetic number, because the mean of its divisors is an integer number (4596498).

Almost surely, 2^13789491 is an apocalyptic number.

13789491 is a deficient number, since it is larger than the sum of its proper divisors (4596501).

13789491 is an equidigital number, since it uses as much as digits as its factorization.

13789491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4596500.

The product of its digits is 54432, while the sum is 42.

The square root of 13789491 is about 3713.4203909603. The cubic root of 13789491 is about 239.8001287329.

The spelling of 13789491 in words is "thirteen million, seven hundred eighty-nine thousand, four hundred ninety-one".