6349999 has 4 divisors (see below), whose sum is σ = 6361200. Its totient is φ = 6338800.

The previous prime is 6349997. The next prime is 6350011. The reversal of 6349999 is 9999436.

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 6349999 - 2¹ = 6349997 is a prime.

It is a Duffinian number.

6349999 is a modest number, since divided by 9999 gives 634 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6349997) 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, 4702 + ... + 5899.

It is an arithmetic number, because the mean of its divisors is an integer number (1590300).

Almost surely, 2^6349999 is an apocalyptic number.

6349999 is a deficient number, since it is larger than the sum of its proper divisors (11201).

6349999 is a wasteful number, since it uses less digits than its factorization.

6349999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11200.

The product of its digits is 472392, while the sum is 49.

The square root of 6349999 is about 2519.9204352519. The cubic root of 6349999 is about 185.1787801819.

The spelling of 6349999 in words is "six million, three hundred forty-nine thousand, nine hundred ninety-nine".