9997600144 has 45 divisors (see below), whose sum is σ = 22539168171. Its totient is φ = 4283485920.

The previous prime is 9997600127. The next prime is 9997600163. The reversal of 9997600144 is 4410067999.

The square root of 9997600144 is 99988.

It is a perfect power (a square), and thus also a powerful number.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2797879 + ... + 2801449.

Almost surely, 2^9997600144 is an apocalyptic number.

9997600144 is the 99988-th square number.

It is an amenable number.

9997600144 is an abundant number, since it is smaller than the sum of its proper divisors (12541568027).

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

9997600144 is an frugal number, since it uses more digits than its factorization.

9997600144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7164 (or 3580 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 49.

The cubic root of 9997600144 is about 2154.2623318094.

Multiplying 9997600144 by its sum of digits (49), we get a square (489882407056 = 699916²).

9997600144 divided by its sum of digits (49) gives a square (204032656 = 14284²).

The spelling of 9997600144 in words is "nine billion, nine hundred ninety-seven million, six hundred thousand, one hundred forty-four".