6393491 has 8 divisors (see below), whose sum is σ = 6933024. Its totient is φ = 5860800.

The previous prime is 6393473. The next prime is 6393503. The reversal of 6393491 is 1943936.

6393491 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6393491 - 2²² = 2199187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6393421) 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 in 7 ways as a sum of consecutive naturals, for example, 335 + ... + 3591.

It is an arithmetic number, because the mean of its divisors is an integer number (866628).

Almost surely, 2^6393491 is an apocalyptic number.

6393491 is a deficient number, since it is larger than the sum of its proper divisors (539533).

6393491 is a wasteful number, since it uses less digits than its factorization.

6393491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3421.

The product of its digits is 17496, while the sum is 35.

The square root of 6393491 is about 2528.5353467966. The cubic root of 6393491 is about 185.6005901159.

The spelling of 6393491 in words is "six million, three hundred ninety-three thousand, four hundred ninety-one".