39138590 has 16 divisors (see below), whose sum is σ = 74593872. Its totient is φ = 14734464.

The previous prime is 39138587. The next prime is 39138599. The reversal of 39138590 is 9583193.

39138590 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39138599) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 114944 + ... + 115283.

It is an arithmetic number, because the mean of its divisors is an integer number (4662117).

Almost surely, 2^39138590 is an apocalyptic number.

39138590 is a deficient number, since it is larger than the sum of its proper divisors (35455282).

39138590 is a wasteful number, since it uses less digits than its factorization.

39138590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230251.

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 39138590 is about 6256.0842385633. The cubic root of 39138590 is about 339.5223685540.

The spelling of 39138590 in words is "thirty-nine million, one hundred thirty-eight thousand, five hundred ninety".