39439242 has 12 divisors (see below), whose sum is σ = 85451730. Its totient is φ = 13146408.

The previous prime is 39439229. The next prime is 39439259. The reversal of 39439242 is 24293493.

39439242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 39200121 + 239121 = 6261^2 + 489^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 39439197 and 39439206.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 1095517 + ... + 1095552.

Almost surely, 2^39439242 is an apocalyptic number.

39439242 is an abundant number, since it is smaller than the sum of its proper divisors (46012488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39439242 is a wasteful number, since it uses less digits than its factorization.

39439242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2191077 (or 2191074 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The square root of 39439242 is about 6280.0670378588. The cubic root of 39439242 is about 340.3895247312.

The spelling of 39439242 in words is "thirty-nine million, four hundred thirty-nine thousand, two hundred forty-two".