9899937 has 12 divisors (see below), whose sum is σ = 14364324. Its totient is φ = 6570240.

The previous prime is 9899921. The next prime is 9899947. The reversal of 9899937 is 7399989.

It is a happy number.

9899937 is digitally balanced in base 2, base 3 and base 4, 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 2 ways, for example, as 3594816 + 6305121 = 1896^2 + 2511^2 .

It is not a de Polignac number, because 9899937 - 2⁴ = 9899921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9899947) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 264 + ... + 4457.

It is an arithmetic number, because the mean of its divisors is an integer number (1197027).

Almost surely, 2^9899937 is an apocalyptic number.

It is an amenable number.

9899937 is a deficient number, since it is larger than the sum of its proper divisors (4464387).

9899937 is a wasteful number, since it uses less digits than its factorization.

9899937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4960 (or 4957 counting only the distinct ones).

The product of its digits is 1102248, while the sum is 54.

The square root of 9899937 is about 3146.4165331373. The cubic root of 9899937 is about 214.7224614281.

The spelling of 9899937 in words is "nine million, eight hundred ninety-nine thousand, nine hundred thirty-seven".