6389961600 has 288 divisors, whose sum is σ = 23138440920. Its totient is φ = 1548800000.

The previous prime is 6389961593. The next prime is 6389961601. The reversal of 6389961600 is 61699836.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 6389961600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6389961601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1158850 + ... + 1164350.

Almost surely, 2^6389961600 is an apocalyptic number.

6389961600 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6389961600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11569220460).

6389961600 is an abundant number, since it is smaller than the sum of its proper divisors (16748479320).

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

6389961600 is a wasteful number, since it uses less digits than its factorization.

6389961600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5550 (or 5522 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 48.

The square root of 6389961600 is about 79937.2353787645. The cubic root of 6389961600 is about 1855.6643145376.

The spelling of 6389961600 in words is "six billion, three hundred eighty-nine million, nine hundred sixty-one thousand, six hundred".