6467442779 has 16 divisors (see below), whose sum is σ = 7428542400. Its totient is φ = 5515689984.

The previous prime is 6467442767. The next prime is 6467442781. The reversal of 6467442779 is 9772447646.

It is a de Polignac number, because none of the positive numbers 2^k-6467442779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6467442739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2317517 + ... + 2320305.

It is an arithmetic number, because the mean of its divisors is an integer number (464283900).

Almost surely, 2^6467442779 is an apocalyptic number.

6467442779 is a deficient number, since it is larger than the sum of its proper divisors (961099621).

6467442779 is a wasteful number, since it uses less digits than its factorization.

6467442779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4342.

The product of its digits is 14224896, while the sum is 56.

The square root of 6467442779 is about 80420.4127010052. The cubic root of 6467442779 is about 1863.1344592464.

The spelling of 6467442779 in words is "six billion, four hundred sixty-seven million, four hundred forty-two thousand, seven hundred seventy-nine".