9990027 has 16 divisors (see below), whose sum is σ = 15444480. Its totient is φ = 6370056.

The previous prime is 9990017. The next prime is 9990047. The reversal of 9990027 is 7200999.

It is not a de Polignac number, because 9990027 - 2⁷ = 9989899 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 9989973 and 9990000.

It is not an unprimeable number, because it can be changed into a prime (9990017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7423 + ... + 8664.

It is an arithmetic number, because the mean of its divisors is an integer number (965280).

Almost surely, 2^9990027 is an apocalyptic number.

9990027 is a deficient number, since it is larger than the sum of its proper divisors (5454453).

9990027 is a wasteful number, since it uses less digits than its factorization.

9990027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16119 (or 16113 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 36.

The square root of 9990027 is about 3160.7003970639. The cubic root of 9990027 is about 215.3718245904.

The spelling of 9990027 in words is "nine million, nine hundred ninety thousand, twenty-seven".