9937939 has 4 divisors (see below), whose sum is σ = 10841400. Its totient is φ = 9034480.

The previous prime is 9937927. The next prime is 9937957. The reversal of 9937939 is 9397399.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9937939 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 9937892 and 9937901.

It is not an unprimeable number, because it can be changed into a prime (9937339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 451714 + ... + 451735.

It is an arithmetic number, because the mean of its divisors is an integer number (2710350).

Almost surely, 2^9937939 is an apocalyptic number.

9937939 is a deficient number, since it is larger than the sum of its proper divisors (903461).

9937939 is a wasteful number, since it uses less digits than its factorization.

9937939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903460.

The product of its digits is 413343, while the sum is 49.

The square root of 9937939 is about 3152.4496823899. The cubic root of 9937939 is about 214.9968559122.

The spelling of 9937939 in words is "nine million, nine hundred thirty-seven thousand, nine hundred thirty-nine".