13749129 has 8 divisors (see below), whose sum is σ = 20369120. Its totient is φ = 9166068.

The previous prime is 13749119. The next prime is 13749133. The reversal of 13749129 is 92194731.

13749129 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13749129 - 2⁸ = 13748873 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13749093 and 13749102.

It is not an unprimeable number, because it can be changed into a prime (13749119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254587 + ... + 254640.

It is an arithmetic number, because the mean of its divisors is an integer number (2546140).

Almost surely, 2^13749129 is an apocalyptic number.

It is an amenable number.

13749129 is a deficient number, since it is larger than the sum of its proper divisors (6619991).

13749129 is an equidigital number, since it uses as much as digits as its factorization.

13749129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509236 (or 509230 counting only the distinct ones).

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

The square root of 13749129 is about 3707.9817960718. The cubic root of 13749129 is about 239.5659341685.

The spelling of 13749129 in words is "thirteen million, seven hundred forty-nine thousand, one hundred twenty-nine".