6393984 has 32 divisors (see below), whose sum is σ = 16985040. Its totient is φ = 2131200.

The previous prime is 6393983. The next prime is 6394009. The reversal of 6393984 is 4893936.

It is a tau number, because it is divible by the number of its divisors (32).

It is a d-powerful number, because it can be written as 6³ + 3 + 9² + 3¹³ + 9⁷ + 8 + 4⁷ .

It is not an unprimeable number, because it can be changed into a prime (6393983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7942 + ... + 8709.

Almost surely, 2^6393984 is an apocalyptic number.

6393984 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

6393984 is an abundant number, since it is smaller than the sum of its proper divisors (10591056).

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

6393984 is a wasteful number, since it uses less digits than its factorization.

6393984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16668 (or 16656 counting only the distinct ones).

The product of its digits is 139968, while the sum is 42.

The square root of 6393984 is about 2528.6328321842. The cubic root of 6393984 is about 185.6053605269.

The spelling of 6393984 in words is "six million, three hundred ninety-three thousand, nine hundred eighty-four".