8407440684 has 120 divisors (see below), whose sum is σ = 22902663168. Its totient is φ = 2686387680.

The previous prime is 8407440667. The next prime is 8407440703. The reversal of 8407440684 is 4860447048.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1070797 + ... + 1078619.

Almost surely, 2^8407440684 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 8407440684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11451331584).

8407440684 is an abundant number, since it is smaller than the sum of its proper divisors (14495222484).

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

8407440684 is a wasteful number, since it uses less digits than its factorization.

8407440684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7977 (or 7966 counting only the distinct ones).

The product of its (nonzero) digits is 688128, while the sum is 45.

The square root of 8407440684 is about 91692.0971730934. The cubic root of 8407440684 is about 2033.3927495194.

The spelling of 8407440684 in words is "eight billion, four hundred seven million, four hundred forty thousand, six hundred eighty-four".