9923399 has 4 divisors (see below), whose sum is σ = 10001664. Its totient is φ = 9845136.

The previous prime is 9923383. The next prime is 9923413. The reversal of 9923399 is 9933299.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9923399 - 2⁴ = 9923383 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 (9923369) 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, 38942 + ... + 39195.

It is an arithmetic number, because the mean of its divisors is an integer number (2500416).

Almost surely, 2^9923399 is an apocalyptic number.

9923399 is a deficient number, since it is larger than the sum of its proper divisors (78265).

9923399 is a wasteful number, since it uses less digits than its factorization.

9923399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78264.

The product of its digits is 118098, while the sum is 44.

The square root of 9923399 is about 3150.1426951806. The cubic root of 9923399 is about 214.8919521999.

The spelling of 9923399 in words is "nine million, nine hundred twenty-three thousand, three hundred ninety-nine".