13448729 has 4 divisors (see below), whose sum is σ = 15369984. Its totient is φ = 11527476.

The previous prime is 13448707. The next prime is 13448737. The reversal of 13448729 is 92784431.

13448729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 92784431 = 383 ⋅242257.

It is a cyclic number.

It is not a de Polignac number, because 13448729 - 2⁸ = 13448473 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13448692 and 13448701.

It is not an unprimeable number, because it can be changed into a prime (13448429) 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, 960617 + ... + 960630.

It is an arithmetic number, because the mean of its divisors is an integer number (3842496).

Almost surely, 2^13448729 is an apocalyptic number.

It is an amenable number.

13448729 is a deficient number, since it is larger than the sum of its proper divisors (1921255).

13448729 is an equidigital number, since it uses as much as digits as its factorization.

13448729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1921254.

The product of its digits is 48384, while the sum is 38.

The square root of 13448729 is about 3667.2508777012. The cubic root of 13448729 is about 237.8083396841.

The spelling of 13448729 in words is "thirteen million, four hundred forty-eight thousand, seven hundred twenty-nine".