6439018 has 8 divisors (see below), whose sum is σ = 9690912. Its totient is φ = 3208716.

The previous prime is 6439007. The next prime is 6439021. The reversal of 6439018 is 8109346.

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

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, 4630 + ... + 5857.

It is an arithmetic number, because the mean of its divisors is an integer number (1211364).

Almost surely, 2^6439018 is an apocalyptic number.

6439018 is a deficient number, since it is larger than the sum of its proper divisors (3251894).

6439018 is a wasteful number, since it uses less digits than its factorization.

6439018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10796.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 6439018 is about 2537.5220196089. The cubic root of 6439018 is about 186.0400923325.

The spelling of 6439018 in words is "six million, four hundred thirty-nine thousand, eighteen".