9990492176 has 40 divisors (see below), whose sum is σ = 22142314944. Its totient is φ = 4277669760.

The previous prime is 9990492173. The next prime is 9990492203. The reversal of 9990492176 is 6712940999.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is not an unprimeable number, because it can be changed into a prime (9990492173) 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, 81611 + ... + 163221.

Almost surely, 2^9990492176 is an apocalyptic number.

9990492176 is the 81611-st pentagonal number.

It is an amenable number.

9990492176 is an abundant number, since it is smaller than the sum of its proper divisors (12151822768).

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

9990492176 is a wasteful number, since it uses less digits than its factorization.

9990492176 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82719 (or 82713 counting only the distinct ones).

The product of its (nonzero) digits is 2204496, while the sum is 56.

The square root of 9990492176 is about 99952.4495747853. The cubic root of 9990492176 is about 2153.7516739912.

The spelling of 9990492176 in words is "nine billion, nine hundred ninety million, four hundred ninety-two thousand, one hundred seventy-six".