93865 has 4 divisors (see below), whose sum is σ = 112644. Its totient is φ = 75088.

The previous prime is 93851. The next prime is 93871. The reversal of 93865 is 56839.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56839 = 113 ⋅503.

It can be written as a sum of positive squares in 2 ways, for example, as 73984 + 19881 = 272^2 + 141^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-93865 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9382 + ... + 9391.

It is an arithmetic number, because the mean of its divisors is an integer number (28161).

2⁹³⁸⁶⁵ is an apocalyptic number.

It is an amenable number.

93865 is a deficient number, since it is larger than the sum of its proper divisors (18779).

93865 is a wasteful number, since it uses less digits than its factorization.

93865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18778.

The product of its digits is 6480, while the sum is 31.

The square root of 93865 is about 306.3739545066. The cubic root of 93865 is about 45.4465822414.

The spelling of 93865 in words is "ninety-three thousand, eight hundred sixty-five".