93813 has 4 divisors (see below), whose sum is σ = 125088. Its totient is φ = 62540.

The previous prime is 93811. The next prime is 93827. The reversal of 93813 is 31839.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31839 = 3 ⋅10613.

It is a cyclic number.

It is not a de Polignac number, because 93813 - 2¹ = 93811 is a prime.

It is a D-number.

93813 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (93811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15633 + ... + 15638.

It is an arithmetic number, because the mean of its divisors is an integer number (31272).

2⁹³⁸¹³ is an apocalyptic number.

It is an amenable number.

93813 is a deficient number, since it is larger than the sum of its proper divisors (31275).

93813 is a wasteful number, since it uses less digits than its factorization.

93813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31274.

The product of its digits is 648, while the sum is 24.

The square root of 93813 is about 306.2890791393. The cubic root of 93813 is about 45.4381884176.

The spelling of 93813 in words is "ninety-three thousand, eight hundred thirteen".