9933421 has 4 divisors (see below), whose sum is σ = 9954144. Its totient is φ = 9912700.

The previous prime is 9933377. The next prime is 9933431. The reversal of 9933421 is 1243399.

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: 1243399 = 937 ⋅1327.

It is a cyclic number.

It is not a de Polignac number, because 9933421 - 2¹⁷ = 9802349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9933431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9625 + ... + 10606.

It is an arithmetic number, because the mean of its divisors is an integer number (2488536).

Almost surely, 2^9933421 is an apocalyptic number.

It is an amenable number.

9933421 is a deficient number, since it is larger than the sum of its proper divisors (20723).

9933421 is a wasteful number, since it uses less digits than its factorization.

9933421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20722.

The product of its digits is 5832, while the sum is 31.

The square root of 9933421 is about 3151.7330153425. The cubic root of 9933421 is about 214.9642702479.

The spelling of 9933421 in words is "nine million, nine hundred thirty-three thousand, four hundred twenty-one".