6409873 has 4 divisors (see below), whose sum is σ = 6530868. Its totient is φ = 6288880.

The previous prime is 6409849. The next prime is 6409883. The reversal of 6409873 is 3789046.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5531904 + 877969 = 2352^2 + 937^2 .

It is a cyclic number.

It is not a de Polignac number, because 6409873 - 2¹⁷ = 6278801 is a prime.

It is a super-2 number, since 2×6409873² = 82172943752258, which contains 22 as substring.

It is a d-powerful number, because it can be written as 6² + 4¹¹ + 0 + 9³ + 8⁷ + 7⁶ + 3 .

It is a Duffinian number.

6409873 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6409883) 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, 60418 + ... + 60523.

It is an arithmetic number, because the mean of its divisors is an integer number (1632717).

Almost surely, 2^6409873 is an apocalyptic number.

It is an amenable number.

6409873 is a deficient number, since it is larger than the sum of its proper divisors (120995).

6409873 is a wasteful number, since it uses less digits than its factorization.

6409873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120994.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 6409873 is about 2531.7726991181. The cubic root of 6409873 is about 185.7589759735.

The spelling of 6409873 in words is "six million, four hundred nine thousand, eight hundred seventy-three".