6409799 has 16 divisors (see below), whose sum is σ = 7485696. Its totient is φ = 5424000.

The previous prime is 6409757. The next prime is 6409807. The reversal of 6409799 is 9979046.

It is a cyclic number.

It is not a de Polignac number, because 6409799 - 2¹² = 6405703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6400799) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28124 + ... + 28350.

It is an arithmetic number, because the mean of its divisors is an integer number (467856).

Almost surely, 2^6409799 is an apocalyptic number.

6409799 is a deficient number, since it is larger than the sum of its proper divisors (1075897).

6409799 is a wasteful number, since it uses less digits than its factorization.

6409799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406.

The product of its (nonzero) digits is 122472, while the sum is 44.

The square root of 6409799 is about 2531.7580848098. The cubic root of 6409799 is about 185.7582611275.

The spelling of 6409799 in words is "six million, four hundred nine thousand, seven hundred ninety-nine".