38378639 has 8 divisors (see below), whose sum is σ = 43762320. Its totient is φ = 33342336.

The previous prime is 38378633. The next prime is 38378671. The reversal of 38378639 is 93687383.

38378639 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 cyclic number.

It is not a de Polignac number, because 38378639 - 2¹⁶ = 38313103 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38378593 and 38378602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38378633) 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, 86609 + ... + 87050.

It is an arithmetic number, because the mean of its divisors is an integer number (5470290).

Almost surely, 2^38378639 is an apocalyptic number.

38378639 is a deficient number, since it is larger than the sum of its proper divisors (5383681).

38378639 is a wasteful number, since it uses less digits than its factorization.

38378639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173689.

The product of its digits is 653184, while the sum is 47.

The square root of 38378639 is about 6195.0495558954. The cubic root of 38378639 is about 337.3104969994.

The spelling of 38378639 in words is "thirty-eight million, three hundred seventy-eight thousand, six hundred thirty-nine".