6439230 has 64 divisors (see below), whose sum is σ = 19630080. Its totient is φ = 1471392.

The previous prime is 6439219. The next prime is 6439259. The reversal of 6439230 is 329346.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 6439194 and 6439203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 187 + ... + 3593.

It is an arithmetic number, because the mean of its divisors is an integer number (306720).

Almost surely, 2^6439230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6439230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9815040).

6439230 is an abundant number, since it is smaller than the sum of its proper divisors (13190850).

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

6439230 is a wasteful number, since it uses less digits than its factorization.

6439230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3430 (or 3424 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 6439230 is about 2537.5637923016. The cubic root of 6439230 is about 186.0421340552.

The spelling of 6439230 in words is "six million, four hundred thirty-nine thousand, two hundred thirty".