47000457779 has 4 divisors (see below), whose sum is σ = 51273226680. Its totient is φ = 42727688880.

The previous prime is 47000457773. The next prime is 47000457793. The reversal of 47000457779 is 97775400074.

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 47000457779 - 2⁸ = 47000457523 is a prime.

It is a super-2 number, since 2×47000457779² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47000457773) 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 3 ways as a sum of consecutive naturals, for example, 2136384434 + ... + 2136384455.

It is an arithmetic number, because the mean of its divisors is an integer number (12818306670).

Almost surely, 2^47000457779 is an apocalyptic number.

47000457779 is a deficient number, since it is larger than the sum of its proper divisors (4272768901).

47000457779 is a wasteful number, since it uses less digits than its factorization.

47000457779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4272768900.

The product of its (nonzero) digits is 1728720, while the sum is 50.

The spelling of 47000457779 in words is "forty-seven billion, four hundred fifty-seven thousand, seven hundred seventy-nine".