9938513 has 4 divisors (see below), whose sum is σ = 10703028. Its totient is φ = 9174000.

The previous prime is 9938471. The next prime is 9938519. The reversal of 9938513 is 3158399.

9938513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3158399 = 83 ⋅38053.

It can be written as a sum of positive squares in 2 ways, for example, as 6615184 + 3323329 = 2572^2 + 1823^2 .

It is a cyclic number.

It is not a de Polignac number, because 9938513 - 2¹⁶ = 9872977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9938519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 382238 + ... + 382263.

It is an arithmetic number, because the mean of its divisors is an integer number (2675757).

Almost surely, 2^9938513 is an apocalyptic number.

It is an amenable number.

9938513 is a deficient number, since it is larger than the sum of its proper divisors (764515).

9938513 is a wasteful number, since it uses less digits than its factorization.

9938513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764514.

The product of its digits is 29160, while the sum is 38.

The square root of 9938513 is about 3152.5407213865. The cubic root of 9938513 is about 215.0009951279. Note that the first 3 decimals are identical.

The spelling of 9938513 in words is "nine million, nine hundred thirty-eight thousand, five hundred thirteen".