6439570132 has 12 divisors (see below), whose sum is σ = 11573822260. Its totient is φ = 3132763776.

The previous prime is 6439570127. The next prime is 6439570183. The reversal of 6439570132 is 2310759346.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5728067856 + 711502276 = 75684^2 + 26674^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21755157 + ... + 21755452.

Almost surely, 2^6439570132 is an apocalyptic number.

It is an amenable number.

6439570132 is a deficient number, since it is larger than the sum of its proper divisors (5134252128).

6439570132 is a wasteful number, since it uses less digits than its factorization.

6439570132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43510650 (or 43510648 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 40.

The square root of 6439570132 is about 80246.9322279674. The cubic root of 6439570132 is about 1860.4540969368.

The spelling of 6439570132 in words is "six billion, four hundred thirty-nine million, five hundred seventy thousand, one hundred thirty-two".