9989937 has 12 divisors (see below), whose sum is σ = 14782404. Its totient is φ = 6497280.

The previous prime is 9989927. The next prime is 9989957. The reversal of 9989937 is 7399899.

It is a happy number.

9989937 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 2322576 + 7667361 = 1524^2 + 2769^2 .

It is not a de Polignac number, because 9989937 - 2⁴ = 9989921 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9989927) 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, 13168 + ... + 13905.

It is an arithmetic number, because the mean of its divisors is an integer number (1231867).

Almost surely, 2^9989937 is an apocalyptic number.

It is an amenable number.

9989937 is a deficient number, since it is larger than the sum of its proper divisors (4792467).

9989937 is a wasteful number, since it uses less digits than its factorization.

9989937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27120 (or 27117 counting only the distinct ones).

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

The square root of 9989937 is about 3160.6861596812. The cubic root of 9989937 is about 215.3711778279.

The spelling of 9989937 in words is "nine million, nine hundred eighty-nine thousand, nine hundred thirty-seven".