9819423 has 6 divisors (see below), whose sum is σ = 14183624. Its totient is φ = 6546276.

The previous prime is 9819391. The next prime is 9819427. The reversal of 9819423 is 3249189.

It is not a de Polignac number, because 9819423 - 2⁵ = 9819391 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 (9819427) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 545515 + ... + 545532.

Almost surely, 2^9819423 is an apocalyptic number.

9819423 is a deficient number, since it is larger than the sum of its proper divisors (4364201).

9819423 is a wasteful number, since it uses less digits than its factorization.

9819423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091053 (or 1091050 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 9819423 is about 3133.5958577966. The cubic root of 9819423 is about 214.1387794609.

It can be divided in two parts, 981 and 9423, that added together give a square (10404 = 102²).

The spelling of 9819423 in words is "nine million, eight hundred nineteen thousand, four hundred twenty-three".