6439104 has 84 divisors (see below), whose sum is σ = 21106384. Its totient is φ = 1838592.

The previous prime is 6439067. The next prime is 6439123. The reversal of 6439104 is 4019346.

6439104 is a `hidden beast` number, since 643 + 9 + 10 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (84).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3234 + ... + 4830.

Almost surely, 2^6439104 is an apocalyptic number.

6439104 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6439104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10553192).

6439104 is an abundant number, since it is smaller than the sum of its proper divisors (14667280).

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

6439104 is a wasteful number, since it uses less digits than its factorization.

6439104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1622 (or 1609 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 6439104 is about 2537.5389652181. The cubic root of 6439104 is about 186.0409205839.

The spelling of 6439104 in words is "six million, four hundred thirty-nine thousand, one hundred four".