9923445 has 32 divisors (see below), whose sum is σ = 20163840. Its totient is φ = 4536000.

The previous prime is 9923429. The next prime is 9923449. The reversal of 9923445 is 5443299.

It is not a de Polignac number, because 9923445 - 2⁴ = 9923429 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9923449) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4306 + ... + 6195.

It is an arithmetic number, because the mean of its divisors is an integer number (630120).

Almost surely, 2^9923445 is an apocalyptic number.

It is an amenable number.

9923445 is an abundant number, since it is smaller than the sum of its proper divisors (10240395).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9923445 is a wasteful number, since it uses less digits than its factorization.

9923445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10522 (or 10516 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 9923445 is about 3150.1499964287. The cubic root of 9923445 is about 214.8922842439.

The spelling of 9923445 in words is "nine million, nine hundred twenty-three thousand, four hundred forty-five".