38971187 has 4 divisors (see below), whose sum is σ = 39071760. Its totient is φ = 38870616.

The previous prime is 38971159. The next prime is 38971189. The reversal of 38971187 is 78117983.

38971187 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 38971187 - 2¹² = 38967091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38971189) 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 3 ways as a sum of consecutive naturals, for example, 49703 + ... + 50480.

It is an arithmetic number, because the mean of its divisors is an integer number (9767940).

Almost surely, 2^38971187 is an apocalyptic number.

38971187 is a deficient number, since it is larger than the sum of its proper divisors (100573).

38971187 is a wasteful number, since it uses less digits than its factorization.

38971187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100572.

The product of its digits is 84672, while the sum is 44.

The square root of 38971187 is about 6242.6906859142. The cubic root of 38971187 is about 339.0376100724.

The spelling of 38971187 in words is "thirty-eight million, nine hundred seventy-one thousand, one hundred eighty-seven".