6437446879 has 4 divisors (see below), whose sum is σ = 6439685760. Its totient is φ = 6435208000.

The previous prime is 6437446837. The next prime is 6437446889. The reversal of 6437446879 is 9786447346.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6437446879 - 2¹³ = 6437438687 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 (6437446889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1115122 + ... + 1120879.

It is an arithmetic number, because the mean of its divisors is an integer number (1609921440).

Almost surely, 2^6437446879 is an apocalyptic number.

6437446879 is a deficient number, since it is larger than the sum of its proper divisors (2238881).

6437446879 is a wasteful number, since it uses less digits than its factorization.

6437446879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2238880.

The product of its digits is 24385536, while the sum is 58.

The square root of 6437446879 is about 80233.7016408940. The cubic root of 6437446879 is about 1860.2495983499.

The spelling of 6437446879 in words is "six billion, four hundred thirty-seven million, four hundred forty-six thousand, eight hundred seventy-nine".