9932421 has 16 divisors (see below), whose sum is σ = 14013440. Its totient is φ = 6240240.

The previous prime is 9932411. The next prime is 9932423. The reversal of 9932421 is 1242399.

9932421 = 714² + 715² + ... + 732².

9932421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9932421 - 2¹⁷ = 9801349 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 (9932423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15126 + ... + 15768.

It is an arithmetic number, because the mean of its divisors is an integer number (875840).

Almost surely, 2^9932421 is an apocalyptic number.

It is an amenable number.

9932421 is a deficient number, since it is larger than the sum of its proper divisors (4081019).

9932421 is a wasteful number, since it uses less digits than its factorization.

9932421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 936.

The product of its digits is 3888, while the sum is 30.

The square root of 9932421 is about 3151.5743684705. The cubic root of 9932421 is about 214.9570565034.

The spelling of 9932421 in words is "nine million, nine hundred thirty-two thousand, four hundred twenty-one".