9939018 has 16 divisors (see below), whose sum is σ = 19918080. Its totient is φ = 3306336.

The previous prime is 9939011. The next prime is 9939019. The reversal of 9939018 is 8109399.

It is not an unprimeable number, because it can be changed into a prime (9939011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2278 + ... + 5006.

It is an arithmetic number, because the mean of its divisors is an integer number (1244880).

Almost surely, 2^9939018 is an apocalyptic number.

9939018 is an abundant number, since it is smaller than the sum of its proper divisors (9979062).

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

9939018 is a wasteful number, since it uses less digits than its factorization.

9939018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3341.

The product of its (nonzero) digits is 17496, while the sum is 39.

The square root of 9939018 is about 3152.6208144970. The cubic root of 9939018 is about 215.0046366406.

It can be divided in two parts, 993 and 9018, that added together give a triangular number (10011 = T₁₄₁).

The spelling of 9939018 in words is "nine million, nine hundred thirty-nine thousand, eighteen".