899725073 has 24 divisors (see below), whose sum is σ = 995011992. Its totient is φ = 813017088.

The previous prime is 899725067. The next prime is 899725103. The reversal of 899725073 is 370527998.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 816130624 + 83594449 = 28568^2 + 9143^2 .

It is not a de Polignac number, because 899725073 - 2²⁶ = 832616209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (899725003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2874365 + ... + 2874677.

It is an arithmetic number, because the mean of its divisors is an integer number (41458833).

Almost surely, 2^899725073 is an apocalyptic number.

It is an amenable number.

899725073 is a deficient number, since it is larger than the sum of its proper divisors (95286919).

899725073 is a wasteful number, since it uses less digits than its factorization.

899725073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645 (or 632 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 50.

The square root of 899725073 is about 29995.4175333500. The cubic root of 899725073 is about 965.3910638157.

The spelling of 899725073 in words is "eight hundred ninety-nine million, seven hundred twenty-five thousand, seventy-three".