9990019692 has 18 divisors (see below), whose sum is σ = 25252549868. Its totient is φ = 3330006552.

The previous prime is 9990019609. The next prime is 9990019733. The reversal of 9990019692 is 2969100999.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 138750238 + ... + 138750309.

Almost surely, 2^9990019692 is an apocalyptic number.

It is an amenable number.

9990019692 is an abundant number, since it is smaller than the sum of its proper divisors (15262530176).

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

9990019692 is a wasteful number, since it uses less digits than its factorization.

9990019692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277500557 (or 277500552 counting only the distinct ones).

The product of its (nonzero) digits is 708588, while the sum is 54.

The square root of 9990019692 is about 99950.0860029645. The cubic root of 9990019692 is about 2153.7177207341.

The spelling of 9990019692 in words is "nine billion, nine hundred ninety million, nineteen thousand, six hundred ninety-two".