38639713 has 8 divisors (see below), whose sum is σ = 44356032. Its totient is φ = 32972496.

The previous prime is 38639707. The next prime is 38639719. The reversal of 38639713 is 31793683.

It is an interprime number because it is at equal distance from previous prime (38639707) and next prime (38639719).

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 38639713 - 2⁵ = 38639681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38639719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10570 + ... + 13747.

It is an arithmetic number, because the mean of its divisors is an integer number (5544504).

Almost surely, 2^38639713 is an apocalyptic number.

It is an amenable number.

38639713 is a deficient number, since it is larger than the sum of its proper divisors (5716319).

38639713 is a wasteful number, since it uses less digits than its factorization.

38639713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24551.

The product of its digits is 81648, while the sum is 40.

The square root of 38639713 is about 6216.0850219411. The cubic root of 38639713 is about 338.0736304234.

The spelling of 38639713 in words is "thirty-eight million, six hundred thirty-nine thousand, seven hundred thirteen".