39996239 has 4 divisors (see below), whose sum is σ = 40384656. Its totient is φ = 39607824.

The previous prime is 39996233. The next prime is 39996247. The reversal of 39996239 is 93269993.

39996239 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93269993 = 19 ⋅4908947.

It is a cyclic number.

It is not a de Polignac number, because 39996239 - 2²⁴ = 23219023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39996233) 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 3 ways as a sum of consecutive naturals, for example, 194054 + ... + 194259.

It is an arithmetic number, because the mean of its divisors is an integer number (10096164).

Almost surely, 2^39996239 is an apocalyptic number.

39996239 is a deficient number, since it is larger than the sum of its proper divisors (388417).

39996239 is a wasteful number, since it uses less digits than its factorization.

39996239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388416.

The product of its digits is 708588, while the sum is 50.

The square root of 39996239 is about 6324.2579801902. The cubic root of 39996239 is about 341.9844703002.

The spelling of 39996239 in words is "thirty-nine million, nine hundred ninety-six thousand, two hundred thirty-nine".