13749227 has 4 divisors (see below), whose sum is σ = 14084616. Its totient is φ = 13413840.

The previous prime is 13749191. The next prime is 13749233. The reversal of 13749227 is 72294731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72294731 = 719 ⋅100549.

It is a cyclic number.

It is not a de Polignac number, because 13749227 - 2¹⁴ = 13732843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13749247) 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, 167633 + ... + 167714.

It is an arithmetic number, because the mean of its divisors is an integer number (3521154).

Almost surely, 2^13749227 is an apocalyptic number.

13749227 is a deficient number, since it is larger than the sum of its proper divisors (335389).

13749227 is an equidigital number, since it uses as much as digits as its factorization.

13749227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335388.

The product of its digits is 21168, while the sum is 35.

The square root of 13749227 is about 3707.9950107841. The cubic root of 13749227 is about 239.5665033538.

It can be divided in two parts, 1374 and 9227, that added together give a palindrome (10601).

The spelling of 13749227 in words is "thirteen million, seven hundred forty-nine thousand, two hundred twenty-seven".