9599491440 has 960 divisors, whose sum is σ = 42819259392. Its totient is φ = 1957063680.

The previous prime is 9599491423. The next prime is 9599491487. The reversal of 9599491440 is 441949959.

9599491440 is a `hidden beast` number, since 9 + 599 + 4 + 9 + 1 + 4 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 181122454 + ... + 181122506.

Almost surely, 2^9599491440 is an apocalyptic number.

9599491440 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 9599491440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21409629696).

9599491440 is an abundant number, since it is smaller than the sum of its proper divisors (33219767952).

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

9599491440 is a wasteful number, since it uses less digits than its factorization.

9599491440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 54.

The square root of 9599491440 is about 97976.9944425731. The cubic root of 9599491440 is about 2125.2796081440.

The spelling of 9599491440 in words is "nine billion, five hundred ninety-nine million, four hundred ninety-one thousand, four hundred forty".