9899456 has 56 divisors (see below), whose sum is σ = 23652480. Its totient is φ = 4015872.

The previous prime is 9899443. The next prime is 9899467. The reversal of 9899456 is 6549989.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7931 + ... + 9093.

Almost surely, 2^9899456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9899456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11826240).

9899456 is an abundant number, since it is smaller than the sum of its proper divisors (13753024).

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

9899456 is a wasteful number, since it uses less digits than its factorization.

9899456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201 (or 1191 counting only the distinct ones).

The product of its digits is 699840, while the sum is 50.

The square root of 9899456 is about 3146.3400960481. The cubic root of 9899456 is about 214.7189838579.

The spelling of 9899456 in words is "nine million, eight hundred ninety-nine thousand, four hundred fifty-six".