9738973998 has 24 divisors (see below), whose sum is σ = 22724273208. Its totient is φ = 2996607312.

The previous prime is 9738973997. The next prime is 9738974009. The reversal of 9738973998 is 8993798379.

9738973998 is a `hidden beast` number, since 97 + 389 + 73 + 9 + 98 = 666.

It is a super-2 number, since 2×9738973998² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9738973997) 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, 20809540 + ... + 20810007.

It is an arithmetic number, because the mean of its divisors is an integer number (946844717).

Almost surely, 2^9738973998 is an apocalyptic number.

9738973998 is an abundant number, since it is smaller than the sum of its proper divisors (12985299210).

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

9738973998 is a wasteful number, since it uses less digits than its factorization.

9738973998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41619568 (or 41619565 counting only the distinct ones).

The product of its digits is 185177664, while the sum is 72.

The square root of 9738973998 is about 98686.2401654861. The cubic root of 9738973998 is about 2135.5237320810.

The spelling of 9738973998 in words is "nine billion, seven hundred thirty-eight million, nine hundred seventy-three thousand, nine hundred ninety-eight".