39408243 has 16 divisors (see below), whose sum is σ = 60145920. Its totient is φ = 22483296.

The previous prime is 39408241. The next prime is 39408251. The reversal of 39408243 is 34280493.

39408243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 39408243 - 2¹ = 39408241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39408241) 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 15 ways as a sum of consecutive naturals, for example, 18013 + ... + 20081.

It is an arithmetic number, because the mean of its divisors is an integer number (3759120).

Almost surely, 2^39408243 is an apocalyptic number.

39408243 is a deficient number, since it is larger than the sum of its proper divisors (20737677).

39408243 is a wasteful number, since it uses less digits than its factorization.

39408243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2986.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 39408243 is about 6277.5985057982. The cubic root of 39408243 is about 340.3003200028.

The spelling of 39408243 in words is "thirty-nine million, four hundred eight thousand, two hundred forty-three".