899728107 has 4 divisors (see below), whose sum is σ = 1199637480. Its totient is φ = 599818736.

The previous prime is 899728091. The next prime is 899728129. The reversal of 899728107 is 701827998.

899728107 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.

It is a cyclic number.

It is not a de Polignac number, because 899728107 - 2⁴ = 899728091 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 899728107.

It is not an unprimeable number, because it can be changed into a prime (899728507) 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, 149954682 + ... + 149954687.

It is an arithmetic number, because the mean of its divisors is an integer number (299909370).

Almost surely, 2^899728107 is an apocalyptic number.

899728107 is a deficient number, since it is larger than the sum of its proper divisors (299909373).

899728107 is a wasteful number, since it uses less digits than its factorization.

899728107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299909372.

The product of its (nonzero) digits is 508032, while the sum is 51.

The square root of 899728107 is about 29995.4681076992. The cubic root of 899728107 is about 965.3921489594.

The spelling of 899728107 in words is "eight hundred ninety-nine million, seven hundred twenty-eight thousand, one hundred seven".