8040857946 has 64 divisors (see below), whose sum is σ = 17775313920. Its totient is φ = 2404621440.

The previous prime is 8040857941. The next prime is 8040857963. The reversal of 8040857946 is 6497580408.

It is not an unprimeable number, because it can be changed into a prime (8040857941) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2125885 + ... + 2129663.

It is an arithmetic number, because the mean of its divisors is an integer number (277739280).

Almost surely, 2^8040857946 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8040857946, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8887656960).

8040857946 is an abundant number, since it is smaller than the sum of its proper divisors (9734455974).

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

8040857946 is a wasteful number, since it uses less digits than its factorization.

8040857946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4211.

The product of its (nonzero) digits is 1935360, while the sum is 51.

The square root of 8040857946 is about 89670.8310767777. The cubic root of 8040857946 is about 2003.3990487944.

The spelling of 8040857946 in words is "eight billion, forty million, eight hundred fifty-seven thousand, nine hundred forty-six".