9989930 has 16 divisors (see below), whose sum is σ = 18113760. Its totient is φ = 3966672.

The previous prime is 9989927. The next prime is 9989957. The reversal of 9989930 is 399899.

It is a happy number.

9989930 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2204 + ... + 4983.

It is an arithmetic number, because the mean of its divisors is an integer number (1132110).

Almost surely, 2^9989930 is an apocalyptic number.

9989930 is a deficient number, since it is larger than the sum of its proper divisors (8123830).

9989930 is a wasteful number, since it uses less digits than its factorization.

9989930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7333.

The product of its (nonzero) digits is 157464, while the sum is 47.

The square root of 9989930 is about 3160.6850523265. The cubic root of 9989930 is about 215.3711275240.

The spelling of 9989930 in words is "nine million, nine hundred eighty-nine thousand, nine hundred thirty".