9990492177 has 4 divisors (see below), whose sum is σ = 13320656240. Its totient is φ = 6660328116.

The previous prime is 9990492173. The next prime is 9990492203. The reversal of 9990492177 is 7712940999.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 9990492177 - 2² = 9990492173 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 1665082027 + ... + 1665082032.

It is an arithmetic number, because the mean of its divisors is an integer number (3330164060).

Almost surely, 2^9990492177 is an apocalyptic number.

It is an amenable number.

9990492177 is a deficient number, since it is larger than the sum of its proper divisors (3330164063).

9990492177 is a wasteful number, since it uses less digits than its factorization.

9990492177 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3330164062.

The product of its (nonzero) digits is 2571912, while the sum is 57.

The square root of 9990492177 is about 99952.4495797877. The cubic root of 9990492177 is about 2153.7516740630.

The spelling of 9990492177 in words is "nine billion, nine hundred ninety million, four hundred ninety-two thousand, one hundred seventy-seven".