9997423 has 4 divisors (see below), whose sum is σ = 10134448. Its totient is φ = 9860400.

The previous prime is 9997397. The next prime is 9997441. The reversal of 9997423 is 3247999.

9997423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3247999 = 53 ⋅61283.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9997423 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9997423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9997483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68403 + ... + 68548.

It is an arithmetic number, because the mean of its divisors is an integer number (2533612).

Almost surely, 2^9997423 is an apocalyptic number.

9997423 is a deficient number, since it is larger than the sum of its proper divisors (137025).

9997423 is a wasteful number, since it uses less digits than its factorization.

9997423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137024.

The product of its digits is 122472, while the sum is 43.

The square root of 9997423 is about 3161.8701744379. The cubic root of 9997423 is about 215.4249608193.

The spelling of 9997423 in words is "nine million, nine hundred ninety-seven thousand, four hundred twenty-three".