8040660400 has 60 divisors (see below), whose sum is σ = 19330391992. Its totient is φ = 3214149120.

The previous prime is 8040660377. The next prime is 8040660401. The reversal of 8040660400 is 40660408.

It is not an unprimeable number, because it can be changed into a prime (8040660401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 695467 + ... + 706933.

Almost surely, 2^8040660400 is an apocalyptic number.

8040660400 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8040660400 is an abundant number, since it is smaller than the sum of its proper divisors (11289731592).

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

8040660400 is a wasteful number, since it uses less digits than its factorization.

8040660400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13238 (or 13227 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 8040660400 is about 89669.7295635489. The cubic root of 8040660400 is about 2003.3826423068.

The spelling of 8040660400 in words is "eight billion, forty million, six hundred sixty thousand, four hundred".