38971709 has 12 divisors (see below), whose sum is σ = 45439488. Its totient is φ = 33327000.

The previous prime is 38971651. The next prime is 38971711. The reversal of 38971709 is 90717983.

38971709 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 38971709 - 2²⁰ = 37923133 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38971709.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38971739) 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 11 ways as a sum of consecutive naturals, for example, 33284 + ... + 34434.

It is an arithmetic number, because the mean of its divisors is an integer number (3786624).

Almost surely, 2^38971709 is an apocalyptic number.

It is an amenable number.

38971709 is a deficient number, since it is larger than the sum of its proper divisors (6467779).

38971709 is a wasteful number, since it uses less digits than its factorization.

38971709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1856 (or 1849 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 44.

The square root of 38971709 is about 6242.7324946693. The cubic root of 38971709 is about 339.0391238133.

The spelling of 38971709 in words is "thirty-eight million, nine hundred seventy-one thousand, seven hundred nine".