9994864 has 40 divisors (see below), whose sum is σ = 21360240. Its totient is φ = 4492800.

The previous prime is 9994837. The next prime is 9994867. The reversal of 9994864 is 4684999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9994867) 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, 18924 + ... + 19444.

It is an arithmetic number, because the mean of its divisors is an integer number (534006).

Almost surely, 2^9994864 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 9994864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10680120).

9994864 is an abundant number, since it is smaller than the sum of its proper divisors (11365376).

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

9994864 is a wasteful number, since it uses less digits than its factorization.

9994864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649 (or 643 counting only the distinct ones).

The product of its digits is 559872, while the sum is 49.

The square root of 9994864 is about 3161.4654829683. The cubic root of 9994864 is about 215.4065787650.

The spelling of 9994864 in words is "nine million, nine hundred ninety-four thousand, eight hundred sixty-four".