38389639 has 4 divisors (see below), whose sum is σ = 38405224. Its totient is φ = 38374056.

The previous prime is 38389627. The next prime is 38389643. The reversal of 38389639 is 93698383.

38389639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 38389639 - 2¹⁷ = 38258567 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38389592 and 38389601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38389619) 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, 3192 + ... + 9325.

It is an arithmetic number, because the mean of its divisors is an integer number (9601306).

Almost surely, 2^38389639 is an apocalyptic number.

38389639 is a deficient number, since it is larger than the sum of its proper divisors (15585).

38389639 is a wasteful number, since it uses less digits than its factorization.

38389639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15584.

The product of its digits is 839808, while the sum is 49.

The square root of 38389639 is about 6195.9372979397. The cubic root of 38389639 is about 337.3427203154.

The spelling of 38389639 in words is "thirty-eight million, three hundred eighty-nine thousand, six hundred thirty-nine".