9585997998 has 16 divisors (see below), whose sum is σ = 19617856896. Its totient is φ = 3121022520.

The previous prime is 9585997991. The next prime is 9585998017. The reversal of 9585997998 is 8997995859.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9585997991) 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, 18577258 + ... + 18577773.

It is an arithmetic number, because the mean of its divisors is an integer number (1226116056).

Almost surely, 2^9585997998 is an apocalyptic number.

9585997998 is an abundant number, since it is smaller than the sum of its proper divisors (10031858898).

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

9585997998 is a wasteful number, since it uses less digits than its factorization.

9585997998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37155079.

The product of its digits is 661348800, while the sum is 78.

The square root of 9585997998 is about 97908.1099705229. The cubic root of 9585997998 is about 2124.2833475785.

The spelling of 9585997998 in words is "nine billion, five hundred eighty-five million, nine hundred ninety-seven thousand, nine hundred ninety-eight".