13749493 has 4 divisors (see below), whose sum is σ = 13764960. Its totient is φ = 13734028.

The previous prime is 13749487. The next prime is 13749503. The reversal of 13749493 is 39494731.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13749493 - 2²¹ = 11652341 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13749403) 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, 6313 + ... + 8206.

It is an arithmetic number, because the mean of its divisors is an integer number (3441240).

Almost surely, 2^13749493 is an apocalyptic number.

It is an amenable number.

13749493 is a deficient number, since it is larger than the sum of its proper divisors (15467).

13749493 is an equidigital number, since it uses as much as digits as its factorization.

13749493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15466.

The product of its digits is 81648, while the sum is 40.

The square root of 13749493 is about 3708.0308790516. The cubic root of 13749493 is about 239.5680482717.

The spelling of 13749493 in words is "thirteen million, seven hundred forty-nine thousand, four hundred ninety-three".