6399100 has 36 divisors (see below), whose sum is σ = 14061600. Its totient is φ = 2527360.

The previous prime is 6399091. The next prime is 6399109. The reversal of 6399100 is 19936.

It is a happy number.

6399100 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (6399091) and next prime (6399109).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6399109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8541 + ... + 9259.

It is an arithmetic number, because the mean of its divisors is an integer number (390600).

Almost surely, 2^6399100 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 6399100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7030800).

6399100 is an abundant number, since it is smaller than the sum of its proper divisors (7662500).

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

6399100 is a wasteful number, since it uses less digits than its factorization.

6399100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822 (or 815 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 28.

The square root of 6399100 is about 2529.6442437624. The cubic root of 6399100 is about 185.6548499575.

The spelling of 6399100 in words is "six million, three hundred ninety-nine thousand, one hundred".