93921 has 4 divisors (see below), whose sum is σ = 125232. Its totient is φ = 62612.

The previous prime is 93913. The next prime is 93923. The reversal of 93921 is 12939.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 93921 - 2³ = 93913 is a prime.

It is a D-number.

It is a Curzon number.

It is a plaindrome in base 13.

It is a zygodrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 93891 and 93900.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 93921.

It is not an unprimeable number, because it can be changed into a prime (93923) 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, 15651 + ... + 15656.

It is an arithmetic number, because the mean of its divisors is an integer number (31308).

2⁹³⁹²¹ is an apocalyptic number.

It is an amenable number.

93921 is a deficient number, since it is larger than the sum of its proper divisors (31311).

93921 is a wasteful number, since it uses less digits than its factorization.

93921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31310.

The product of its digits is 486, while the sum is 24.

The square root of 93921 is about 306.4653324603. The cubic root of 93921 is about 45.4556182777.

The spelling of 93921 in words is "ninety-three thousand, nine hundred twenty-one".