6404884380 has 48 divisors (see below), whose sum is σ = 19926308640. Its totient is φ = 1707969024.

The previous prime is 6404884327. The next prime is 6404884391. The reversal of 6404884380 is 834884046.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 5929909 + ... + 5930988.

It is an arithmetic number, because the mean of its divisors is an integer number (415131430).

Almost surely, 2^6404884380 is an apocalyptic number.

6404884380 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6404884380 is an abundant number, since it is smaller than the sum of its proper divisors (13521424260).

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

6404884380 is a wasteful number, since it uses less digits than its factorization.

6404884380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11860915 (or 11860907 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 45.

The square root of 6404884380 is about 80030.5215527176. The cubic root of 6404884380 is about 1857.1077317504.

The spelling of 6404884380 in words is "six billion, four hundred four million, eight hundred eighty-four thousand, three hundred eighty".