39381938 has 8 divisors (see below), whose sum is σ = 59538432. Its totient is φ = 19535796.

The previous prime is 39381931. The next prime is 39381959. The reversal of 39381938 is 83918393.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (39381931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77270 + ... + 77777.

It is an arithmetic number, because the mean of its divisors is an integer number (7442304).

Almost surely, 2^39381938 is an apocalyptic number.

39381938 is a deficient number, since it is larger than the sum of its proper divisors (20156494).

39381938 is a wasteful number, since it uses less digits than its factorization.

39381938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155176.

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

The square root of 39381938 is about 6275.5030077277. The cubic root of 39381938 is about 340.2245863347.

The spelling of 39381938 in words is "thirty-nine million, three hundred eighty-one thousand, nine hundred thirty-eight".