6442584947 has 4 divisors (see below), whose sum is σ = 6722697360. Its totient is φ = 6162472536.

The previous prime is 6442584913. The next prime is 6442584959. The reversal of 6442584947 is 7494852446.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7494852446 = 2 ⋅3747426223.

It is a cyclic number.

It is not a de Polignac number, because 6442584947 - 2¹⁴ = 6442568563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6442584977) 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, 140056172 + ... + 140056217.

It is an arithmetic number, because the mean of its divisors is an integer number (1680674340).

Almost surely, 2^6442584947 is an apocalyptic number.

6442584947 is a deficient number, since it is larger than the sum of its proper divisors (280112413).

6442584947 is a wasteful number, since it uses less digits than its factorization.

6442584947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280112412.

The product of its digits is 7741440, while the sum is 53.

The square root of 6442584947 is about 80265.7146420562. The cubic root of 6442584947 is about 1860.7443880443.

The spelling of 6442584947 in words is "six billion, four hundred forty-two million, five hundred eighty-four thousand, nine hundred forty-seven".