9809423 has 16 divisors (see below), whose sum is σ = 11058432. Its totient is φ = 8640000.

The previous prime is 9809419. The next prime is 9809447. The reversal of 9809423 is 3249089.

It is a Cunningham number, because it is equal to 3132²-1.

It is a cyclic number.

It is not a de Polignac number, because 9809423 - 2² = 9809419 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 (9809123) 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 15 ways as a sum of consecutive naturals, for example, 40583 + ... + 40823.

It is an arithmetic number, because the mean of its divisors is an integer number (691152).

Almost surely, 2^9809423 is an apocalyptic number.

9809423 is a deficient number, since it is larger than the sum of its proper divisors (1249009).

9809423 is a wasteful number, since it uses less digits than its factorization.

9809423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 9809423 is about 3131.9998403576. Note that the first 3 decimals coincide. The cubic root of 9809423 is about 214.0660625226.

The spelling of 9809423 in words is "nine million, eight hundred nine thousand, four hundred twenty-three".