9400783840 has 384 divisors, whose sum is σ = 27590492160. Its totient is φ = 2958778368.

The previous prime is 9400783831. The next prime is 9400783867. The reversal of 9400783840 is 483870049.

It is a Harshad number since it is a multiple of its sum of digits (43).

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 63 ways as a sum of consecutive naturals, for example, 74021857 + ... + 74021983.

It is an arithmetic number, because the mean of its divisors is an integer number (71850240).

Almost surely, 2^9400783840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9400783840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13795246080).

9400783840 is an abundant number, since it is smaller than the sum of its proper divisors (18189708320).

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

9400783840 is a wasteful number, since it uses less digits than its factorization.

9400783840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274 (or 266 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 9400783840 is about 96957.6394102084. The cubic root of 9400783840 is about 2110.5129545084.

The spelling of 9400783840 in words is "nine billion, four hundred million, seven hundred eighty-three thousand, eight hundred forty".