6434239 has 6 divisors (see below), whose sum is σ = 7484784. Its totient is φ = 5515020.

The previous prime is 6434209. The next prime is 6434251. The reversal of 6434239 is 9324346.

It is not a de Polignac number, because 6434239 - 2⁷ = 6434111 is a prime.

It is a d-powerful number, because it can be written as 6⁵ + 4² + 3 + 4⁷ + 2¹⁵ + 3¹³ + 9⁷ .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6434239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6434209) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 65607 + ... + 65704.

It is an arithmetic number, because the mean of its divisors is an integer number (1247464).

Almost surely, 2^6434239 is an apocalyptic number.

6434239 is a deficient number, since it is larger than the sum of its proper divisors (1050545).

6434239 is a wasteful number, since it uses less digits than its factorization.

6434239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131325 (or 131318 counting only the distinct ones).

The product of its digits is 15552, while the sum is 31.

The square root of 6434239 is about 2536.5801781138. The cubic root of 6434239 is about 185.9940549994.

The spelling of 6434239 in words is "six million, four hundred thirty-four thousand, two hundred thirty-nine".