4947647757 has 16 divisors (see below), whose sum is σ = 7114634688. Its totient is φ = 3040283520.

The previous prime is 4947647741. The next prime is 4947647791. The reversal of 4947647757 is 7577467494.

It is a happy number.

It is not a de Polignac number, because 4947647757 - 2⁴ = 4947647741 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4947647757.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4947647357) 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, 64848 + ... + 118745.

It is an arithmetic number, because the mean of its divisors is an integer number (444664668).

Almost surely, 2^4947647757 is an apocalyptic number.

It is an amenable number.

4947647757 is a deficient number, since it is larger than the sum of its proper divisors (2166986931).

4947647757 is a wasteful number, since it uses less digits than its factorization.

4947647757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184300.

The product of its digits is 41489280, while the sum is 60.

The square root of 4947647757 is about 70339.5177478493. The cubic root of 4947647757 is about 1703.9869234460.

The spelling of 4947647757 in words is "four billion, nine hundred forty-seven million, six hundred forty-seven thousand, seven hundred fifty-seven".