9389940 has 96 divisors (see below), whose sum is σ = 30535680. Its totient is φ = 2111616.

The previous prime is 9389929. The next prime is 9389951. The reversal of 9389940 is 499839.

It is an interprime number because it is at equal distance from previous prime (9389929) and next prime (9389951).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 9389892 and 9389901.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 33039 + ... + 33321.

It is an arithmetic number, because the mean of its divisors is an integer number (318080).

Almost surely, 2^9389940 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9389940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15267840).

9389940 is an abundant number, since it is smaller than the sum of its proper divisors (21145740).

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

9389940 is a wasteful number, since it uses less digits than its factorization.

9389940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381 (or 379 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 9389940 is about 3064.3008990633. The cubic root of 9389940 is about 210.9701147374.

It can be divided in two parts, 93899 and 40, that added together give a palindrome (93939).

The spelling of 9389940 in words is "nine million, three hundred eighty-nine thousand, nine hundred forty".