728959246999 has 4 divisors (see below), whose sum is σ = 729529192960. Its totient is φ = 728389301040.

The previous prime is 728959246997. The next prime is 728959247063. The reversal of 728959246999 is 999642959827.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 999642959827 = 1621 ⋅616682887.

It is a cyclic number.

It is not a de Polignac number, because 728959246999 - 2¹ = 728959246997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728959246997) 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, 284971062 + ... + 284973619.

It is an arithmetic number, because the mean of its divisors is an integer number (182382298240).

Almost surely, 2^728959246999 is an apocalyptic number.

728959246999 is a deficient number, since it is larger than the sum of its proper divisors (569945961).

728959246999 is a wasteful number, since it uses less digits than its factorization.

728959246999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569945960.

The product of its digits is 1587237120, while the sum is 79.

The spelling of 728959246999 in words is "seven hundred twenty-eight billion, nine hundred fifty-nine million, two hundred forty-six thousand, nine hundred ninety-nine".