13749291 has 16 divisors (see below), whose sum is σ = 20463520. Its totient is φ = 9123840.

The previous prime is 13749289. The next prime is 13749299. The reversal of 13749291 is 19294731.

13749291 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13749291 - 2¹ = 13749289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13749299) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5451 + ... + 7563.

It is an arithmetic number, because the mean of its divisors is an integer number (1278970).

Almost surely, 2^13749291 is an apocalyptic number.

13749291 is a deficient number, since it is larger than the sum of its proper divisors (6714229).

13749291 is a wasteful number, since it uses less digits than its factorization.

13749291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2363 (or 2357 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 13749291 is about 3708.0036407749. The cubic root of 13749291 is about 239.5668750652.

The spelling of 13749291 in words is "thirteen million, seven hundred forty-nine thousand, two hundred ninety-one".