9863920 has 60 divisors (see below), whose sum is σ = 25232760. Its totient is φ = 3583360.

The previous prime is 9863851. The next prime is 9863923. The reversal of 9863920 is 293689.

It is a self number, because there is not a number n which added to its sum of digits gives 9863920.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9863923) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9171 + ... + 10189.

It is an arithmetic number, because the mean of its divisors is an integer number (420546).

Almost surely, 2^9863920 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 9863920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12616380).

9863920 is an abundant number, since it is smaller than the sum of its proper divisors (15368840).

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

9863920 is a wasteful number, since it uses less digits than its factorization.

9863920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054 (or 1037 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 9863920 is about 3140.6878227548. The cubic root of 9863920 is about 214.4617507955.

The spelling of 9863920 in words is "nine million, eight hundred sixty-three thousand, nine hundred twenty".