93421 has 4 divisors (see below), whose sum is σ = 94432. Its totient is φ = 92412.

The previous prime is 93419. The next prime is 93427. The reversal of 93421 is 12439.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 12439 = 7 ⋅1777.

It is a cyclic number.

It is not a de Polignac number, because 93421 - 2¹ = 93419 is a prime.

It is a d-powerful number, because it can be written as 9 + 3⁹ + 4⁸ + 2¹³ + 1 .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (93427) 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, 351 + ... + 556.

It is an arithmetic number, because the mean of its divisors is an integer number (23608).

2⁹³⁴²¹ is an apocalyptic number.

It is an amenable number.

93421 is a deficient number, since it is larger than the sum of its proper divisors (1011).

93421 is a wasteful number, since it uses less digits than its factorization.

93421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010.

The product of its digits is 216, while the sum is 19.

The square root of 93421 is about 305.6484909173. The cubic root of 93421 is about 45.3748118543.

The spelling of 93421 in words is "ninety-three thousand, four hundred twenty-one".