47447677 has 4 divisors (see below), whose sum is σ = 47476156. Its totient is φ = 47419200.

The previous prime is 47447669. The next prime is 47447711. The reversal of 47447677 is 77674474.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12152196 + 35295481 = 3486^2 + 5941^2 .

It is a cyclic number.

It is not a de Polignac number, because 47447677 - 2³ = 47447669 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 (47447627) 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 3 ways as a sum of consecutive naturals, for example, 11574 + ... + 15127.

It is an arithmetic number, because the mean of its divisors is an integer number (11869039).

Almost surely, 2^47447677 is an apocalyptic number.

It is an amenable number.

47447677 is a deficient number, since it is larger than the sum of its proper divisors (28479).

47447677 is a wasteful number, since it uses less digits than its factorization.

47447677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28478.

The product of its digits is 921984, while the sum is 46.

The square root of 47447677 is about 6888.2274207520. The cubic root of 47447677 is about 362.0247965880.

It can be divided in two parts, 4744 and 7677, that added together give a palindrome (12421).

The spelling of 47447677 in words is "forty-seven million, four hundred forty-seven thousand, six hundred seventy-seven".