9899125 has 8 divisors (see below), whose sum is σ = 12354264. Its totient is φ = 7919200.

The previous prime is 9899119. The next prime is 9899143. The reversal of 9899125 is 5219989.

9899125 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 935089 + 8964036 = 967^2 + 2994^2 .

It is not a de Polignac number, because 9899125 - 2⁹ = 9898613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39472 + ... + 39721.

It is an arithmetic number, because the mean of its divisors is an integer number (1544283).

Almost surely, 2^9899125 is an apocalyptic number.

It is an amenable number.

9899125 is a deficient number, since it is larger than the sum of its proper divisors (2455139).

9899125 is an equidigital number, since it uses as much as digits as its factorization.

9899125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79208 (or 79198 counting only the distinct ones).

The product of its digits is 58320, while the sum is 43.

The square root of 9899125 is about 3146.2874948104. The cubic root of 9899125 is about 214.7165907037.

The spelling of 9899125 in words is "nine million, eight hundred ninety-nine thousand, one hundred twenty-five".