38838139 has 4 divisors (see below), whose sum is σ = 38915856. Its totient is φ = 38760424.

The previous prime is 38838103. The next prime is 38838169. The reversal of 38838139 is 93183883.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93183883 = 13 ⋅7167991.

It is a cyclic number.

It is not a de Polignac number, because 38838139 - 2⁷ = 38838011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38838095 and 38838104.

It is not an unprimeable number, because it can be changed into a prime (38838169) 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, 38104 + ... + 39109.

It is an arithmetic number, because the mean of its divisors is an integer number (9728964).

Almost surely, 2^38838139 is an apocalyptic number.

38838139 is a deficient number, since it is larger than the sum of its proper divisors (77717).

38838139 is an equidigital number, since it uses as much as digits as its factorization.

38838139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77716.

The product of its digits is 124416, while the sum is 43.

The square root of 38838139 is about 6232.0252727344. The cubic root of 38838139 is about 338.6513443004.

The spelling of 38838139 in words is "thirty-eight million, eight hundred thirty-eight thousand, one hundred thirty-nine".