6393407 has 4 divisors (see below), whose sum is σ = 6470520. Its totient is φ = 6316296.

The previous prime is 6393403. The next prime is 6393421. The reversal of 6393407 is 7043936.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6393407 - 2² = 6393403 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6393403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38432 + ... + 38597.

It is an arithmetic number, because the mean of its divisors is an integer number (1617630).

Almost surely, 2^6393407 is an apocalyptic number.

6393407 is a deficient number, since it is larger than the sum of its proper divisors (77113).

6393407 is an equidigital number, since it uses as much as digits as its factorization.

6393407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77112.

The product of its (nonzero) digits is 13608, while the sum is 32.

The square root of 6393407 is about 2528.5187363356. The cubic root of 6393407 is about 185.5997772831.

The spelling of 6393407 in words is "six million, three hundred ninety-three thousand, four hundred seven".