13749211 has 4 divisors (see below), whose sum is σ = 15713392. Its totient is φ = 11785032.

The previous prime is 13749191. The next prime is 13749233. The reversal of 13749211 is 11294731.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 13749211 - 2⁷ = 13749083 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13749211.

It is not an unprimeable number, because it can be changed into a prime (13749251) 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, 982080 + ... + 982093.

It is an arithmetic number, because the mean of its divisors is an integer number (3928348).

Almost surely, 2^13749211 is an apocalyptic number.

13749211 is a deficient number, since it is larger than the sum of its proper divisors (1964181).

13749211 is an equidigital number, since it uses as much as digits as its factorization.

13749211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1964180.

The product of its digits is 1512, while the sum is 28.

The square root of 13749211 is about 3707.9928532833. The cubic root of 13749211 is about 239.5664104258.

It can be divided in two parts, 1374 and 9211, that added together give a triangular number (10585 = T₁₄₅).

The spelling of 13749211 in words is "thirteen million, seven hundred forty-nine thousand, two hundred eleven".