8500040940 has 48 divisors (see below), whose sum is σ = 24620813280. Its totient is φ = 2188515840.

The previous prime is 8500040903. The next prime is 8500040947. The reversal of 8500040940 is 490400058.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 8500040898 and 8500040907.

It is not an unprimeable number, because it can be changed into a prime (8500040947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2440801 + ... + 2444280.

It is an arithmetic number, because the mean of its divisors is an integer number (512933610).

Almost surely, 2^8500040940 is an apocalyptic number.

It is an amenable number.

8500040940 is an abundant number, since it is smaller than the sum of its proper divisors (16120772340).

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

8500040940 is a wasteful number, since it uses less digits than its factorization.

8500040940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4885122 (or 4885120 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 8500040940 is about 92195.6666009851. Note that the first 4 decimals coincide. The cubic root of 8500040940 is about 2040.8308274820.

Adding to 8500040940 its reverse (490400058), we get a palindrome (8990440998).

The spelling of 8500040940 in words is "eight billion, five hundred million, forty thousand, nine hundred forty".