38861 has 2 divisors, whose sum is σ = 38862. Its totient is φ = 38860.

The previous prime is 38851. The next prime is 38867. The reversal of 38861 is 16883.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37636 + 1225 = 194^2 + 35^2 .

It is an emirp because it is prime and its reverse (16883) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38861 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 38861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19430 + 19431.

It is an arithmetic number, because the mean of its divisors is an integer number (19431).

2³⁸⁸⁶¹ is an apocalyptic number.

It is an amenable number.

38861 is a deficient number, since it is larger than the sum of its proper divisors (1).

38861 is an equidigital number, since it uses as much as digits as its factorization.

38861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 26.

The square root of 38861 is about 197.1319355153. The cubic root of 38861 is about 33.8717777194.

The spelling of 38861 in words is "thirty-eight thousand, eight hundred sixty-one".