6396844 has 24 divisors (see below), whose sum is σ = 11955440. Its totient is φ = 2985984.

The previous prime is 6396833. The next prime is 6396847. The reversal of 6396844 is 4486936.

It is a super-2 number, since 2×6396844² = 81839226320672, which contains 22 as substring.

It is a d-powerful number, because it can be written as 6⁴ + 3¹³ + 9⁷ + 6⁴ + 8³ + 4³ + 4⁷ .

It is a junction number, because it is equal to n+sod(n) for n = 6396797 and 6396806.

It is not an unprimeable number, because it can be changed into a prime (6396847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4972 + ... + 6124.

Almost surely, 2^6396844 is an apocalyptic number.

It is an amenable number.

6396844 is a deficient number, since it is larger than the sum of its proper divisors (5558596).

6396844 is a wasteful number, since it uses less digits than its factorization.

6396844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1249 (or 1247 counting only the distinct ones).

The product of its digits is 124416, while the sum is 40.

The square root of 6396844 is about 2529.1982919494. The cubic root of 6396844 is about 185.6330298801.

The spelling of 6396844 in words is "six million, three hundred ninety-six thousand, eight hundred forty-four".