39936243 has 4 divisors (see below), whose sum is σ = 53248328. Its totient is φ = 26624160.

The previous prime is 39936241. The next prime is 39936289. The reversal of 39936243 is 34263993.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 39936243 - 2¹ = 39936241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39936241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6656038 + ... + 6656043.

It is an arithmetic number, because the mean of its divisors is an integer number (13312082).

Almost surely, 2^39936243 is an apocalyptic number.

39936243 is a deficient number, since it is larger than the sum of its proper divisors (13312085).

39936243 is a wasteful number, since it uses less digits than its factorization.

39936243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13312084.

The product of its digits is 104976, while the sum is 39.

The square root of 39936243 is about 6319.5128767968. The cubic root of 39936243 is about 341.8133878144.

The spelling of 39936243 in words is "thirty-nine million, nine hundred thirty-six thousand, two hundred forty-three".