38658971 has 4 divisors (see below), whose sum is σ = 41632752. Its totient is φ = 35685192.

The previous prime is 38658959. The next prime is 38658979. The reversal of 38658971 is 17985683.

It is a happy number.

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 38658971 - 2¹⁰ = 38657947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38658979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1486871 + ... + 1486896.

It is an arithmetic number, because the mean of its divisors is an integer number (10408188).

Almost surely, 2^38658971 is an apocalyptic number.

38658971 is a deficient number, since it is larger than the sum of its proper divisors (2973781).

38658971 is a wasteful number, since it uses less digits than its factorization.

38658971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2973780.

The product of its digits is 362880, while the sum is 47.

The square root of 38658971 is about 6217.6338747147. The cubic root of 38658971 is about 338.1297862981.

The spelling of 38658971 in words is "thirty-eight million, six hundred fifty-eight thousand, nine hundred seventy-one".