9821423 has 8 divisors (see below), whose sum is σ = 10437120. Its totient is φ = 9215640.

The previous prime is 9821419. The next prime is 9821429. The reversal of 9821423 is 3241289.

9821423 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 9821423 - 2² = 9821419 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 (9821429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 383 + ... + 4448.

It is an arithmetic number, because the mean of its divisors is an integer number (1304640).

Almost surely, 2^9821423 is an apocalyptic number.

9821423 is a deficient number, since it is larger than the sum of its proper divisors (615697).

9821423 is a wasteful number, since it uses less digits than its factorization.

9821423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4957.

The product of its digits is 3456, while the sum is 29.

The square root of 9821423 is about 3133.9149637474. The cubic root of 9821423 is about 214.1533169236.

The spelling of 9821423 in words is "nine million, eight hundred twenty-one thousand, four hundred twenty-three".