38971957 has 8 divisors (see below), whose sum is σ = 39657600. Its totient is φ = 38289504.

The previous prime is 38971949. The next prime is 38971967. The reversal of 38971957 is 75917983.

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 38971957 - 2³ = 38971949 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 38971957.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38971967) 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, 47769 + ... + 48577.

It is an arithmetic number, because the mean of its divisors is an integer number (4957200).

Almost surely, 2^38971957 is an apocalyptic number.

It is an amenable number.

38971957 is a deficient number, since it is larger than the sum of its proper divisors (685643).

38971957 is an equidigital number, since it uses as much as digits as its factorization.

38971957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1595.

The product of its digits is 476280, while the sum is 49.

The square root of 38971957 is about 6242.7523577345. The cubic root of 38971957 is about 339.0398429805.

The spelling of 38971957 in words is "thirty-eight million, nine hundred seventy-one thousand, nine hundred fifty-seven".