9990006 has 32 divisors (see below), whose sum is σ = 21654528. Its totient is φ = 3054240.

The previous prime is 9989957. The next prime is 9990017. The reversal of 9990006 is 6000999.

It is a congruent number.

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, 16155 + ... + 16761.

It is an arithmetic number, because the mean of its divisors is an integer number (676704).

Almost surely, 2^9990006 is an apocalyptic number.

9990006 is an abundant number, since it is smaller than the sum of its proper divisors (11664522).

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

9990006 is a wasteful number, since it uses less digits than its factorization.

9990006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836.

The product of its (nonzero) digits is 4374, while the sum is 33.

The square root of 9990006 is about 3160.6970750137. The cubic root of 9990006 is about 215.3716736795.

The spelling of 9990006 in words is "nine million, nine hundred ninety thousand, six".