39875138 has 4 divisors (see below), whose sum is σ = 59812710. Its totient is φ = 19937568.

The previous prime is 39875131. The next prime is 39875141. The reversal of 39875138 is 83157893.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 36276529 + 3598609 = 6023^2 + 1897^2 .

It is not an unprimeable number, because it can be changed into a prime (39875131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9968783 + ... + 9968786.

Almost surely, 2^39875138 is an apocalyptic number.

39875138 is a deficient number, since it is larger than the sum of its proper divisors (19937572).

39875138 is a wasteful number, since it uses less digits than its factorization.

39875138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19937571.

The product of its digits is 181440, while the sum is 44.

The square root of 39875138 is about 6314.6763970927. The cubic root of 39875138 is about 341.6389667278.

The spelling of 39875138 in words is "thirty-nine million, eight hundred seventy-five thousand, one hundred thirty-eight".