9938540 has 24 divisors (see below), whose sum is σ = 22099392. Its totient is φ = 3741440.

The previous prime is 9938531. The next prime is 9938549. The reversal of 9938540 is 458399.

It is an interprime number because it is at equal distance from previous prime (9938531) and next prime (9938549).

It is a junction number, because it is equal to n+sod(n) for n = 9938494 and 9938503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9938549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14276 + ... + 14955.

It is an arithmetic number, because the mean of its divisors is an integer number (920808).

Almost surely, 2^9938540 is an apocalyptic number.

It is an amenable number.

9938540 is an abundant number, since it is smaller than the sum of its proper divisors (12160852).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9938540 is a wasteful number, since it uses less digits than its factorization.

9938540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29257 (or 29255 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 9938540 is about 3152.5450036439. The cubic root of 9938540 is about 215.0011898258.

The spelling of 9938540 in words is "nine million, nine hundred thirty-eight thousand, five hundred forty".