9945888 has 48 divisors (see below), whose sum is σ = 26270496. Its totient is φ = 3294720.

The previous prime is 9945883. The next prime is 9945889. The reversal of 9945888 is 8885499.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 9945888.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9945883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29883 + ... + 30213.

It is an arithmetic number, because the mean of its divisors is an integer number (547302).

Almost surely, 2^9945888 is an apocalyptic number.

It is an amenable number.

9945888 is an abundant number, since it is smaller than the sum of its proper divisors (16324608).

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

9945888 is a wasteful number, since it uses less digits than its factorization.

9945888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657 (or 649 counting only the distinct ones).

The product of its digits is 829440, while the sum is 51.

The square root of 9945888 is about 3153.7101959438. The cubic root of 9945888 is about 215.0541633865.

The spelling of 9945888 in words is "nine million, nine hundred forty-five thousand, eight hundred eighty-eight".