4782991 has 2 divisors, whose sum is σ = 4782992. Its totient is φ = 4782990.

The previous prime is 4782989. The next prime is 4782997. The reversal of 4782991 is 1992874.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4782991 - 2¹ = 4782989 is a prime.

Together with 4782989, it forms a pair of twin primes.

It is a Chen prime.

4782991 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4782997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2391495 + 2391496.

It is an arithmetic number, because the mean of its divisors is an integer number (2391496).

Almost surely, 2^4782991 is an apocalyptic number.

4782991 is a deficient number, since it is larger than the sum of its proper divisors (1).

4782991 is an equidigital number, since it uses as much as digits as its factorization.

4782991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 40.

The square root of 4782991 is about 2187.0050297153. The cubic root of 4782991 is about 168.4870479938.

It can be divided in two parts, 47 and 82991, that added together give a palindrome (83038).

The spelling of 4782991 in words is "four million, seven hundred eighty-two thousand, nine hundred ninety-one".