39138422 has 8 divisors (see below), whose sum is σ = 58734336. Its totient is φ = 19560312.

The previous prime is 39138391. The next prime is 39138427. The reversal of 39138422 is 22483193.

It is a happy number.

39138422 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39138427) 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 3 ways as a sum of consecutive naturals, for example, 5468 + ... + 10400.

It is an arithmetic number, because the mean of its divisors is an integer number (7341792).

Almost surely, 2^39138422 is an apocalyptic number.

39138422 is a deficient number, since it is larger than the sum of its proper divisors (19595914).

39138422 is a wasteful number, since it uses less digits than its factorization.

39138422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8902.

The product of its digits is 10368, while the sum is 32.

The square root of 39138422 is about 6256.0708116197. The cubic root of 39138422 is about 339.5218827603.

The spelling of 39138422 in words is "thirty-nine million, one hundred thirty-eight thousand, four hundred twenty-two".