9539942 has 4 divisors (see below), whose sum is σ = 14309916. Its totient is φ = 4769970.

The previous prime is 9539939. The next prime is 9539951. The reversal of 9539942 is 2499359.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2499359 = 139 ⋅17981.

It is a self number, because there is not a number n which added to its sum of digits gives 9539942.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2384984 + ... + 2384987.

It is an arithmetic number, because the mean of its divisors is an integer number (3577479).

Almost surely, 2^9539942 is an apocalyptic number.

9539942 is a deficient number, since it is larger than the sum of its proper divisors (4769974).

9539942 is a wasteful number, since it uses less digits than its factorization.

9539942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4769973.

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

The square root of 9539942 is about 3088.6796531852. The cubic root of 9539942 is about 212.0875839608.

The spelling of 9539942 in words is "nine million, five hundred thirty-nine thousand, nine hundred forty-two".