6398456 has 8 divisors (see below), whose sum is σ = 11997120. Its totient is φ = 3199224.

The previous prime is 6398453. The next prime is 6398461. The reversal of 6398456 is 6548936.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6398453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 399896 + ... + 399911.

It is an arithmetic number, because the mean of its divisors is an integer number (1499640).

Almost surely, 2^6398456 is an apocalyptic number.

It is an amenable number.

6398456 is a deficient number, since it is larger than the sum of its proper divisors (5598664).

6398456 is a wasteful number, since it uses less digits than its factorization.

6398456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799813 (or 799809 counting only the distinct ones).

The product of its digits is 155520, while the sum is 41.

The square root of 6398456 is about 2529.5169499333. The cubic root of 6398456 is about 185.6486216996.

The spelling of 6398456 in words is "six million, three hundred ninety-eight thousand, four hundred fifty-six".