728486896139 has 4 divisors (see below), whose sum is σ = 735997070424. Its totient is φ = 720976721856.

The previous prime is 728486896133. The next prime is 728486896169. The reversal of 728486896139 is 931698684827.

728486896139 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 an emirpimes, since its reverse is a distinct semiprime: 931698684827 = 15973 ⋅58329599.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-728486896139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (728486896133) 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, 3755086997 + ... + 3755087190.

It is an arithmetic number, because the mean of its divisors is an integer number (183999267606).

Almost surely, 2^728486896139 is an apocalyptic number.

728486896139 is a deficient number, since it is larger than the sum of its proper divisors (7510174285).

728486896139 is an equidigital number, since it uses as much as digits as its factorization.

728486896139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7510174284.

The product of its digits is 250822656, while the sum is 71.

The spelling of 728486896139 in words is "seven hundred twenty-eight billion, four hundred eighty-six million, eight hundred ninety-six thousand, one hundred thirty-nine".