9904399 has 8 divisors (see below), whose sum is σ = 10296000. Its totient is φ = 9516192.

The previous prime is 9904397. The next prime is 9904403. The reversal of 9904399 is 9934099.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9904399 - 2¹ = 9904397 is a prime.

It is a Duffinian number.

9904399 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9904393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6217 + ... + 7645.

It is an arithmetic number, because the mean of its divisors is an integer number (1287000).

Almost surely, 2^9904399 is an apocalyptic number.

9904399 is a deficient number, since it is larger than the sum of its proper divisors (391601).

9904399 is a wasteful number, since it uses less digits than its factorization.

9904399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1697.

The product of its (nonzero) digits is 78732, while the sum is 43.

The square root of 9904399 is about 3147.1255138618. The cubic root of 9904399 is about 214.7547157653.

The spelling of 9904399 in words is "nine million, nine hundred four thousand, three hundred ninety-nine".