8841640040 has 32 divisors (see below), whose sum is σ = 20003616360. Its totient is φ = 3517113600.

The previous prime is 8841640039. The next prime is 8841640069. The reversal of 8841640040 is 400461488.

It can be written as a sum of positive squares in 4 ways, for example, as 7346889796 + 1494750244 = 85714^2 + 38662^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 603371 + ... + 617850.

Almost surely, 2^8841640040 is an apocalyptic number.

It is an amenable number.

8841640040 is an abundant number, since it is smaller than the sum of its proper divisors (11161976320).

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

8841640040 is a wasteful number, since it uses less digits than its factorization.

8841640040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1221413 (or 1221409 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 35.

The square root of 8841640040 is about 94029.9954269913. The cubic root of 8841640040 is about 2067.8114858458.

The spelling of 8841640040 in words is "eight billion, eight hundred forty-one million, six hundred forty thousand, forty".