9893449884 has 12 divisors (see below), whose sum is σ = 23084716424. Its totient is φ = 3297816624.

The previous prime is 9893449861. The next prime is 9893449889. The reversal of 9893449884 is 4889443989.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×9893449884² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9893449889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 412227067 + ... + 412227090.

Almost surely, 2^9893449884 is an apocalyptic number.

It is an amenable number.

9893449884 is an abundant number, since it is smaller than the sum of its proper divisors (13191266540).

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

9893449884 is a wasteful number, since it uses less digits than its factorization.

9893449884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824454164 (or 824454162 counting only the distinct ones).

The product of its digits is 71663616, while the sum is 66.

The square root of 9893449884 is about 99465.8226930236. The cubic root of 9893449884 is about 2146.7555089812.

The spelling of 9893449884 in words is "nine billion, eight hundred ninety-three million, four hundred forty-nine thousand, eight hundred eighty-four".