13749289 has 2 divisors, whose sum is σ = 13749290. Its totient is φ = 13749288.

The previous prime is 13749283. The next prime is 13749299. The reversal of 13749289 is 98294731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13749264 + 25 = 3708^2 + 5^2 .

It is a cyclic number.

It is not a de Polignac number, because 13749289 - 2⁵ = 13749257 is a prime.

It is not a weakly prime, because it can be changed into another prime (13749283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6874644 + 6874645.

It is an arithmetic number, because the mean of its divisors is an integer number (6874645).

Almost surely, 2^13749289 is an apocalyptic number.

It is an amenable number.

13749289 is a deficient number, since it is larger than the sum of its proper divisors (1).

13749289 is an equidigital number, since it uses as much as digits as its factorization.

13749289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 43.

The square root of 13749289 is about 3708.0033710880. The cubic root of 13749289 is about 239.5668634492.

The spelling of 13749289 in words is "thirteen million, seven hundred forty-nine thousand, two hundred eighty-nine".