9940275840 has 192 divisors, whose sum is σ = 34827720480. Its totient is φ = 2409707520.

The previous prime is 9940275823. The next prime is 9940275871. The reversal of 9940275840 is 485720499.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 9940275840.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 210927 + ... + 253713.

Almost surely, 2^9940275840 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 9940275840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17413860240).

9940275840 is an abundant number, since it is smaller than the sum of its proper divisors (24887444640).

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

9940275840 is a wasteful number, since it uses less digits than its factorization.

9940275840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42831 (or 42808 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 48.

The square root of 9940275840 is about 99700.9319916319. The cubic root of 9940275840 is about 2150.1370628323.

The spelling of 9940275840 in words is "nine billion, nine hundred forty million, two hundred seventy-five thousand, eight hundred forty".