4777891 has 2 divisors, whose sum is σ = 4777892. Its totient is φ = 4777890.

The previous prime is 4777831. The next prime is 4777907. The reversal of 4777891 is 1987774.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4777891 - 2¹¹ = 4775843 is a prime.

It is not a weakly prime, because it can be changed into another prime (4777811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2388945 + 2388946.

It is an arithmetic number, because the mean of its divisors is an integer number (2388946).

Almost surely, 2^4777891 is an apocalyptic number.

4777891 is a deficient number, since it is larger than the sum of its proper divisors (1).

4777891 is an equidigital number, since it uses as much as digits as its factorization.

4777891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 98784, while the sum is 43.

The square root of 4777891 is about 2185.8387406211. The cubic root of 4777891 is about 168.4271419965.

The spelling of 4777891 in words is "four million, seven hundred seventy-seven thousand, eight hundred ninety-one".