38947 has 8 divisors (see below), whose sum is σ = 43200. Its totient is φ = 34944.

The previous prime is 38933. The next prime is 38953. The reversal of 38947 is 74983.

It is a happy number.

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 38947 - 2¹¹ = 36899 is a prime.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38917) 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, 454 + ... + 532.

It is an arithmetic number, because the mean of its divisors is an integer number (5400).

2³⁸⁹⁴⁷ is an apocalyptic number.

38947 is a deficient number, since it is larger than the sum of its proper divisors (4253).

38947 is a wasteful number, since it uses less digits than its factorization.

38947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125.

The product of its digits is 6048, while the sum is 31.

The square root of 38947 is about 197.3499429947. The cubic root of 38947 is about 33.8967455681.

The spelling of 38947 in words is "thirty-eight thousand, nine hundred forty-seven".