4787947 has 4 divisors (see below), whose sum is σ = 4808056.
Its totient is φ = 4767840.
The previous prime is 4787941. The next prime is 4787957. The reversal of 4787947 is 7497874.
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 4787947 - 219 = 4263659 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 4787897 and 4787906.
It is not an unprimeable number, because it can be changed into a prime (4787941) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9693 + ... + 10174.
It is an arithmetic number, because the mean of its divisors is an integer number (1202014).
Almost surely, 24787947 is an apocalyptic number.
4787947 is a deficient number, since it is larger than the sum of its proper divisors (20109).
4787947 is a wasteful number, since it uses less digits than its factorization.
4787947 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 20108.
The product of its digits is 395136, while the sum is 46.
The square root of 4787947 is about 2188.1377927361.
The cubic root of 4787947 is about 168.5452217437.
The spelling of 4787947 in words is "four million, seven hundred eighty-seven thousand, nine hundred forty-seven".