39121138 has 32 divisors (see below), whose sum is σ = 68837760. Its totient is φ = 16329600.

The previous prime is 39121129. The next prime is 39121153. The reversal of 39121138 is 83112193.

39121138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 15 ways as a sum of consecutive naturals, for example, 103033 + ... + 103411.

It is an arithmetic number, because the mean of its divisors is an integer number (2151180).

Almost surely, 2^39121138 is an apocalyptic number.

39121138 is a deficient number, since it is larger than the sum of its proper divisors (29716622).

39121138 is a wasteful number, since it uses less digits than its factorization.

39121138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562.

The product of its digits is 1296, while the sum is 28.

The square root of 39121138 is about 6254.6892808516. The cubic root of 39121138 is about 339.4718964130.

It can be divided in two parts, 3912 and 1138, that added together give a triangular number (5050 = T₁₀₀).

The spelling of 39121138 in words is "thirty-nine million, one hundred twenty-one thousand, one hundred thirty-eight".