9945504 has 72 divisors (see below), whose sum is σ = 29352960. Its totient is φ = 3312576.

The previous prime is 9945461. The next prime is 9945511. The reversal of 9945504 is 4055499.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nialpdrome in base 6.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7137 + ... + 8415.

It is an arithmetic number, because the mean of its divisors is an integer number (407680).

Almost surely, 2^9945504 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 9945504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14676480).

9945504 is an abundant number, since it is smaller than the sum of its proper divisors (19407456).

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

9945504 is a wasteful number, since it uses less digits than its factorization.

9945504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1304 (or 1284 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 9945504 is about 3153.6493146829. The cubic root of 9945504 is about 215.0513956812.

The spelling of 9945504 in words is "nine million, nine hundred forty-five thousand, five hundred four".