9938645 has 8 divisors (see below), whose sum is σ = 12445056. Its totient is φ = 7605136.

The previous prime is 9938641. The next prime is 9938647. The reversal of 9938645 is 5468399.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9938645 - 2² = 9938641 is a prime.

It is a super-3 number, since 3×9938645³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9938596 and 9938605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9938641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43097 + ... + 43326.

It is an arithmetic number, because the mean of its divisors is an integer number (1555632).

Almost surely, 2^9938645 is an apocalyptic number.

It is an amenable number.

9938645 is a deficient number, since it is larger than the sum of its proper divisors (2506411).

9938645 is a wasteful number, since it uses less digits than its factorization.

9938645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86451.

The product of its digits is 233280, while the sum is 44.

The square root of 9938645 is about 3152.5616568118. The cubic root of 9938645 is about 215.0019469807.

The spelling of 9938645 in words is "nine million, nine hundred thirty-eight thousand, six hundred forty-five".