9939542 has 16 divisors (see below), whose sum is σ = 15660000. Its totient is φ = 4722432.

The previous prime is 9939541. The next prime is 9939557. The reversal of 9939542 is 2459399.

It is a self number, because there is not a number n which added to its sum of digits gives 9939542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9939541) 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 7 ways as a sum of consecutive naturals, for example, 7334 + ... + 8582.

It is an arithmetic number, because the mean of its divisors is an integer number (978750).

Almost surely, 2^9939542 is an apocalyptic number.

9939542 is a deficient number, since it is larger than the sum of its proper divisors (5720458).

9939542 is a wasteful number, since it uses less digits than its factorization.

9939542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1447.

The product of its digits is 87480, while the sum is 41.

The square root of 9939542 is about 3152.7039188608. The cubic root of 9939542 is about 215.0084150303.

The spelling of 9939542 in words is "nine million, nine hundred thirty-nine thousand, five hundred forty-two".