4791 has 4 divisors (see below), whose sum is σ = 6392.
Its totient is φ = 3192.
The previous prime is 4789. The next prime is 4793. The reversal of 4791 is 1974.
It is a semiprime because it is the product of two primes.
It is an interprime number because it is at equal distance from previous prime (4789) and next prime (4793).
It is not a de Polignac number, because 4791 - 21 = 4789 is a prime.
It is a D-number.
It is a Duffinian number.
It is a plaindrome in base 8, base 11 and base 13.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (4793) 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, 796 + ... + 801.
It is an arithmetic number, because the mean of its divisors is an integer number (1598).
24791 is an apocalyptic number.
4791 is a deficient number, since it is larger than the sum of its proper divisors (1601).
4791 is a wasteful number, since it uses less digits than its factorization.
4791 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1600.
The product of its digits is 252, while the sum is 21.
The square root of 4791 is about 69.2170499227.
The cubic root of 4791 is about 16.8581038015.
The spelling of 4791 in words is "four thousand, seven hundred ninety-one".