9963421 has 8 divisors (see below), whose sum is σ = 10755360. Its totient is φ = 9175152.

The previous prime is 9963419. The next prime is 9963449. The reversal of 9963421 is 1243699.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9963421 - 2¹ = 9963419 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 (9963521) 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 7 ways as a sum of consecutive naturals, for example, 7986 + ... + 9148.

It is an arithmetic number, because the mean of its divisors is an integer number (1344420).

Almost surely, 2^9963421 is an apocalyptic number.

It is an amenable number.

9963421 is a deficient number, since it is larger than the sum of its proper divisors (791939).

9963421 is a wasteful number, since it uses less digits than its factorization.

9963421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1835.

The product of its digits is 11664, while the sum is 34.

The square root of 9963421 is about 3156.4887137451. The cubic root of 9963421 is about 215.1804578308.

The spelling of 9963421 in words is "nine million, nine hundred sixty-three thousand, four hundred twenty-one".