9939242 has 16 divisors (see below), whose sum is σ = 15912960. Its totient is φ = 4642272.

The previous prime is 9939229. The next prime is 9939247. The reversal of 9939242 is 2429399.

9939242 is nontrivially palindromic in base 3.

9939242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 9939196 and 9939205.

It is not an unprimeable number, because it can be changed into a prime (9939247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 983 + ... + 4565.

It is an arithmetic number, because the mean of its divisors is an integer number (994560).

Almost surely, 2^9939242 is an apocalyptic number.

9939242 is a deficient number, since it is larger than the sum of its proper divisors (5973718).

9939242 is a wasteful number, since it uses less digits than its factorization.

9939242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3677.

The product of its digits is 34992, while the sum is 38.

The square root of 9939242 is about 3152.6563402946. The cubic root of 9939242 is about 215.0062518463.

The spelling of 9939242 in words is "nine million, nine hundred thirty-nine thousand, two hundred forty-two".