38648139 has 8 divisors (see below), whose sum is σ = 51559632. Its totient is φ = 25751040.

The previous prime is 38648107. The next prime is 38648149. The reversal of 38648139 is 93184683.

It is a happy number.

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

It is not a de Polignac number, because 38648139 - 2⁵ = 38648107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38648139.

It is not an unprimeable number, because it can be changed into a prime (38648149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8167 + ... + 11999.

It is an arithmetic number, because the mean of its divisors is an integer number (6444954).

Almost surely, 2^38648139 is an apocalyptic number.

38648139 is a deficient number, since it is larger than the sum of its proper divisors (12911493).

38648139 is a wasteful number, since it uses less digits than its factorization.

38648139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7197.

The product of its digits is 124416, while the sum is 42.

The square root of 38648139 is about 6216.7627427786. The cubic root of 38648139 is about 338.0982027364.

The spelling of 38648139 in words is "thirty-eight million, six hundred forty-eight thousand, one hundred thirty-nine".