6243993 has 16 divisors (see below), whose sum is σ = 10572160. Its totient is φ = 3567888.

The previous prime is 6243967. The next prime is 6244003. The reversal of 6243993 is 3993426.

It is a happy number.

It is not a de Polignac number, because 6243993 - 2⁶ = 6243929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6243943) 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 15 ways as a sum of consecutive naturals, for example, 16330 + ... + 16707.

It is an arithmetic number, because the mean of its divisors is an integer number (660760).

Almost surely, 2^6243993 is an apocalyptic number.

6243993 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

6243993 is a deficient number, since it is larger than the sum of its proper divisors (4328167).

6243993 is a wasteful number, since it uses less digits than its factorization.

6243993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33053 (or 33047 counting only the distinct ones).

The product of its digits is 34992, while the sum is 36.

The square root of 6243993 is about 2498.7983111888. The cubic root of 6243993 is about 184.1425427431.

The spelling of 6243993 in words is "six million, two hundred forty-three thousand, nine hundred ninety-three".