6439822 has 16 divisors (see below), whose sum is σ = 10250640. Its totient is φ = 3025728.

The previous prime is 6439819. The next prime is 6439837. The reversal of 6439822 is 2289346.

It is a congruent number.

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, 4588 + ... + 5824.

It is an arithmetic number, because the mean of its divisors is an integer number (640665).

Almost surely, 2^6439822 is an apocalyptic number.

6439822 is a deficient number, since it is larger than the sum of its proper divisors (3810818).

6439822 is a wasteful number, since it uses less digits than its factorization.

6439822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1395.

The product of its digits is 20736, while the sum is 34.

The square root of 6439822 is about 2537.6804369345. The cubic root of 6439822 is about 186.0478352321.

The spelling of 6439822 in words is "six million, four hundred thirty-nine thousand, eight hundred twenty-two".