4423947877 has 2 divisors, whose sum is σ = 4423947878. Its totient is φ = 4423947876.

The previous prime is 4423947817. The next prime is 4423947911. The reversal of 4423947877 is 7787493244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2988371556 + 1435576321 = 54666^2 + 37889^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4423947877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4423947817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2211973938 + 2211973939.

It is an arithmetic number, because the mean of its divisors is an integer number (2211973939).

Almost surely, 2^4423947877 is an apocalyptic number.

It is an amenable number.

4423947877 is a deficient number, since it is larger than the sum of its proper divisors (1).

4423947877 is an equidigital number, since it uses as much as digits as its factorization.

4423947877 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9483264, while the sum is 55.

The square root of 4423947877 is about 66512.7647673738. The cubic root of 4423947877 is about 1641.6100435015.

The spelling of 4423947877 in words is "four billion, four hundred twenty-three million, nine hundred forty-seven thousand, eight hundred seventy-seven".