6389930 has 8 divisors (see below), whose sum is σ = 11501892. Its totient is φ = 2555968.

The previous prime is 6389917. The next prime is 6389941. The reversal of 6389930 is 399836.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6105841 + 284089 = 2471^2 + 533^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 319487 + ... + 319506.

Almost surely, 2^6389930 is an apocalyptic number.

6389930 is a deficient number, since it is larger than the sum of its proper divisors (5111962).

6389930 is a wasteful number, since it uses less digits than its factorization.

6389930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639000.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 6389930 is about 2527.8310861290. The cubic root of 6389930 is about 185.5661255620.

The spelling of 6389930 in words is "six million, three hundred eighty-nine thousand, nine hundred thirty".