47077447 has 4 divisors (see below), whose sum is σ = 47421216. Its totient is φ = 46733680.

The previous prime is 47077441. The next prime is 47077477. The reversal of 47077447 is 74477074.

47077447 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 47077447 - 2³ = 47077439 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 (47077441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171679 + ... + 171952.

It is an arithmetic number, because the mean of its divisors is an integer number (11855304).

Almost surely, 2^47077447 is an apocalyptic number.

47077447 is a deficient number, since it is larger than the sum of its proper divisors (343769).

47077447 is a wasteful number, since it uses less digits than its factorization.

47077447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343768.

The product of its (nonzero) digits is 153664, while the sum is 40.

The square root of 47077447 is about 6861.3006784428. The cubic root of 47077447 is about 361.0807210472.

It can be divided in two parts, 47077 and 447, that added together give a square (47524 = 218²).

The spelling of 47077447 in words is "forty-seven million, seventy-seven thousand, four hundred forty-seven".