6439117 has 4 divisors (see below), whose sum is σ = 6456060. Its totient is φ = 6422176.

The previous prime is 6439067. The next prime is 6439123. The reversal of 6439117 is 7119346.

It is a happy number.

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 4186116 + 2253001 = 2046^2 + 1501^2 .

It is a cyclic number.

It is not a de Polignac number, because 6439117 - 2¹¹ = 6437069 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 (6439127) 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, 7888 + ... + 8665.

It is an arithmetic number, because the mean of its divisors is an integer number (1614015).

Almost surely, 2^6439117 is an apocalyptic number.

It is an amenable number.

6439117 is a deficient number, since it is larger than the sum of its proper divisors (16943).

6439117 is a wasteful number, since it uses less digits than its factorization.

6439117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16942.

The product of its digits is 4536, while the sum is 31.

The square root of 6439117 is about 2537.5415267538. The cubic root of 6439117 is about 186.0410457841.

It can be divided in two parts, 6439 and 117, that added together give a palindrome (6556).

The spelling of 6439117 in words is "six million, four hundred thirty-nine thousand, one hundred seventeen".