4780891 has 2 divisors, whose sum is σ = 4780892. Its totient is φ = 4780890.

The previous prime is 4780877. The next prime is 4780903. The reversal of 4780891 is 1980874.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4780891 - 2⁹ = 4780379 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4780891.

It is not a weakly prime, because it can be changed into another prime (4780861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2390445 + 2390446.

It is an arithmetic number, because the mean of its divisors is an integer number (2390446).

Almost surely, 2^4780891 is an apocalyptic number.

4780891 is a deficient number, since it is larger than the sum of its proper divisors (1).

4780891 is an equidigital number, since it uses as much as digits as its factorization.

4780891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 4780891 is about 2186.5248683699. The cubic root of 4780891 is about 168.4623859782.

It can be divided in two parts, 4780 and 891, that added together give a triangular number (5671 = T₁₀₆).

The spelling of 4780891 in words is "four million, seven hundred eighty thousand, eight hundred ninety-one".