9894421404 has 144 divisors (see below), whose sum is σ = 30295238400. Its totient is φ = 2735583840.

The previous prime is 9894421367. The next prime is 9894421409. The reversal of 9894421404 is 4041244989.

It is a self number, because there is not a number n which added to its sum of digits gives 9894421404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9894421409) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 719707 + ... + 733325.

It is an arithmetic number, because the mean of its divisors is an integer number (210383600).

Almost surely, 2^9894421404 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 9894421404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15147619200).

9894421404 is an abundant number, since it is smaller than the sum of its proper divisors (20400816996).

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

9894421404 is a wasteful number, since it uses less digits than its factorization.

9894421404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13701 (or 13662 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The square root of 9894421404 is about 99470.7062606876. The cubic root of 9894421404 is about 2146.8257759313.

The spelling of 9894421404 in words is "nine billion, eight hundred ninety-four million, four hundred twenty-one thousand, four hundred four".