47446779 has 16 divisors (see below), whose sum is σ = 67584672. Its totient is φ = 29503488.

The previous prime is 47446757. The next prime is 47446793. The reversal of 47446779 is 97764474.

It is not a de Polignac number, because 47446779 - 2¹² = 47442683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47446579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1647 + ... + 9879.

It is an arithmetic number, because the mean of its divisors is an integer number (4224042).

Almost surely, 2^47446779 is an apocalyptic number.

47446779 is a deficient number, since it is larger than the sum of its proper divisors (20137893).

47446779 is a wasteful number, since it uses less digits than its factorization.

47446779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8366.

The product of its digits is 1185408, while the sum is 48.

The square root of 47446779 is about 6888.1622367653. The cubic root of 47446779 is about 362.0225126664.

The spelling of 47446779 in words is "forty-seven million, four hundred forty-six thousand, seven hundred seventy-nine".