9898619904 has 220 divisors, whose sum is σ = 29817551808. Its totient is φ = 3270758400.

The previous prime is 9898619893. The next prime is 9898619933. The reversal of 9898619904 is 4099168989.

9898619904 is a `hidden beast` number, since 9 + 8 + 9 + 8 + 619 + 9 + 0 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10865209 + ... + 10866119.

Almost surely, 2^9898619904 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 9898619904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14908775904).

9898619904 is an abundant number, since it is smaller than the sum of its proper divisors (19918931904).

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

9898619904 is a wasteful number, since it uses less digits than its factorization.

9898619904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074 (or 1047 counting only the distinct ones).

The product of its (nonzero) digits is 10077696, while the sum is 63.

The square root of 9898619904 is about 99491.8082256022. The cubic root of 9898619904 is about 2147.1293871974.

The spelling of 9898619904 in words is "nine billion, eight hundred ninety-eight million, six hundred nineteen thousand, nine hundred four".