9642447360 has 1200 divisors, whose sum is σ = 43857802296. Its totient is φ = 2006581248.

The previous prime is 9642447341. The next prime is 9642447377. The reversal of 9642447360 is 637442469.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6341255424 + 3301191936 = 79632^2 + 57456^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 132088284 + ... + 132088356.

Almost surely, 2^9642447360 is an apocalyptic number.

9642447360 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9642447360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21928901148).

9642447360 is an abundant number, since it is smaller than the sum of its proper divisors (34215354936).

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

9642447360 is a wasteful number, since it uses less digits than its factorization.

9642447360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135 (or 103 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 45.

The square root of 9642447360 is about 98195.9640718497. The cubic root of 9642447360 is about 2128.4449669689. Note that the first 3 decimals are identical.

The spelling of 9642447360 in words is "nine billion, six hundred forty-two million, four hundred forty-seven thousand, three hundred sixty".