6408899 has 4 divisors (see below), whose sum is σ = 7324464. Its totient is φ = 5493336.

The previous prime is 6408877. The next prime is 6408901. The reversal of 6408899 is 9988046.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6408899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6408839) 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 3 ways as a sum of consecutive naturals, for example, 457772 + ... + 457785.

It is an arithmetic number, because the mean of its divisors is an integer number (1831116).

Almost surely, 2^6408899 is an apocalyptic number.

6408899 is a deficient number, since it is larger than the sum of its proper divisors (915565).

6408899 is an equidigital number, since it uses as much as digits as its factorization.

6408899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915564.

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 6408899 is about 2531.5803364697. The cubic root of 6408899 is about 185.7495666135.

The spelling of 6408899 in words is "six million, four hundred eight thousand, eight hundred ninety-nine".