39908942 has 4 divisors (see below), whose sum is σ = 59863416. Its totient is φ = 19954470.

The previous prime is 39908927. The next prime is 39908963. The reversal of 39908942 is 24980993.

39908942 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: 24980993 = 1877 ⋅13309.

It is a junction number, because it is equal to n+sod(n) for n = 39908893 and 39908902.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 9977234 + ... + 9977237.

It is an arithmetic number, because the mean of its divisors is an integer number (14965854).

Almost surely, 2^39908942 is an apocalyptic number.

39908942 is a deficient number, since it is larger than the sum of its proper divisors (19954474).

39908942 is a wasteful number, since it uses less digits than its factorization.

39908942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19954473.

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 39908942 is about 6317.3524517791. The cubic root of 39908942 is about 341.7354805146.

The spelling of 39908942 in words is "thirty-nine million, nine hundred eight thousand, nine hundred forty-two".