9115237440 has 336 divisors, whose sum is σ = 32214628992. Its totient is φ = 2364899328.

The previous prime is 9115237367. The next prime is 9115237447. The reversal of 9115237440 is 447325119.

9115237440 is a `hidden beast` number, since 91 + 1 + 523 + 7 + 4 + 40 = 666.

9115237440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 9115237395 and 9115237404.

It is not an unprimeable number, because it can be changed into a prime (9115237447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18716877 + ... + 18717363.

It is an arithmetic number, because the mean of its divisors is an integer number (95876872).

Almost surely, 2^9115237440 is an apocalyptic number.

9115237440 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 9115237440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16107314496).

9115237440 is an abundant number, since it is smaller than the sum of its proper divisors (23099391552).

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

9115237440 is a wasteful number, since it uses less digits than its factorization.

9115237440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674 (or 661 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 9115237440 is about 95473.7526234305. The cubic root of 9115237440 is about 2088.9241076167.

The spelling of 9115237440 in words is "nine billion, one hundred fifteen million, two hundred thirty-seven thousand, four hundred forty".