9995809992 has 64 divisors (see below), whose sum is σ = 28950718080. Its totient is φ = 2816819712.

The previous prime is 9995809981. The next prime is 9995810003. The reversal of 9995809992 is 2999085999.

It is an interprime number because it is at equal distance from previous prime (9995809981) and next prime (9995810003).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 395263 + ... + 419790.

It is an arithmetic number, because the mean of its divisors is an integer number (452354970).

Almost surely, 2^9995809992 is an apocalyptic number.

It is an amenable number.

9995809992 is an abundant number, since it is smaller than the sum of its proper divisors (18954908088).

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

9995809992 is a wasteful number, since it uses less digits than its factorization.

9995809992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815142 (or 815138 counting only the distinct ones).

The product of its (nonzero) digits is 42515280, while the sum is 69.

The square root of 9995809992 is about 99979.0477650192. The cubic root of 9995809992 is about 2154.1337447096.

The spelling of 9995809992 in words is "nine billion, nine hundred ninety-five million, eight hundred nine thousand, nine hundred ninety-two".