6439794 has 16 divisors (see below), whose sum is σ = 12940032. Its totient is φ = 2136528.

The previous prime is 6439777. The next prime is 6439819. The reversal of 6439794 is 4979346.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1069 + ... + 3744.

It is an arithmetic number, because the mean of its divisors is an integer number (808752).

Almost surely, 2^6439794 is an apocalyptic number.

6439794 is an abundant number, since it is smaller than the sum of its proper divisors (6500238).

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

6439794 is a wasteful number, since it uses less digits than its factorization.

6439794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5041.

The product of its digits is 163296, while the sum is 42.

The square root of 6439794 is about 2537.6749200794. The cubic root of 6439794 is about 186.0475655897.

The spelling of 6439794 in words is "six million, four hundred thirty-nine thousand, seven hundred ninety-four".