6309993 has 8 divisors (see below), whose sum is σ = 8539168. Its totient is φ = 4143744.

The previous prime is 6309973. The next prime is 6309997. The reversal of 6309993 is 3999036.

6309993 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 not a de Polignac number, because 6309993 - 2⁹ = 6309481 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6309997) 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, 15496 + ... + 15897.

It is an arithmetic number, because the mean of its divisors is an integer number (1067396).

Almost surely, 2^6309993 is an apocalyptic number.

It is an amenable number.

6309993 is a deficient number, since it is larger than the sum of its proper divisors (2229175).

6309993 is a wasteful number, since it uses less digits than its factorization.

6309993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31463.

The product of its (nonzero) digits is 39366, while the sum is 39.

The square root of 6309993 is about 2511.9699440877. The cubic root of 6309993 is about 184.7890754116.

The spelling of 6309993 in words is "six million, three hundred nine thousand, nine hundred ninety-three".