6439707234 has 12 divisors (see below), whose sum is σ = 13952699046. Its totient is φ = 2146569072.

The previous prime is 6439707223. The next prime is 6439707251. The reversal of 6439707234 is 4327079346.

It can be written as a sum of positive squares in only one way, i.e., 5076990009 + 1362717225 = 71253^2 + 36915^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6439707234.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 178880739 + ... + 178880774.

Almost surely, 2^6439707234 is an apocalyptic number.

6439707234 is an abundant number, since it is smaller than the sum of its proper divisors (7512991812).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6439707234 is a wasteful number, since it uses less digits than its factorization.

6439707234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357761521 (or 357761518 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 45.

The square root of 6439707234 is about 80247.7864741452. The cubic root of 6439707234 is about 1860.4673002078.

The spelling of 6439707234 in words is "six billion, four hundred thirty-nine million, seven hundred seven thousand, two hundred thirty-four".