6399252 has 36 divisors (see below), whose sum is σ = 16298100. Its totient is φ = 2116992.

The previous prime is 6399251. The next prime is 6399269. The reversal of 6399252 is 2529936.

6399252 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1887876 + 4511376 = 1374^2 + 2124^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6399251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4768 + ... + 5960.

It is an arithmetic number, because the mean of its divisors is an integer number (452725).

Almost surely, 2^6399252 is an apocalyptic number.

It is an amenable number.

6399252 is an abundant number, since it is smaller than the sum of its proper divisors (9898848).

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

6399252 is a wasteful number, since it uses less digits than its factorization.

6399252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1352 (or 1347 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 6399252 is about 2529.6742873342. The cubic root of 6399252 is about 185.6563199201.

The spelling of 6399252 in words is "six million, three hundred ninety-nine thousand, two hundred fifty-two".