4977778769 has 2 divisors, whose sum is σ = 4977778770. Its totient is φ = 4977778768.

The previous prime is 4977778759. The next prime is 4977778777. The reversal of 4977778769 is 9678777794.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4975468369 + 2310400 = 70537^2 + 1520^2 .

It is a cyclic number.

It is not a de Polignac number, because 4977778769 - 2⁴ = 4977778753 is a prime.

It is a super-2 number, since 2×4977778769² = 49556562946214310722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4977778759) 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, 2488889384 + 2488889385.

It is an arithmetic number, because the mean of its divisors is an integer number (2488889385).

Almost surely, 2^4977778769 is an apocalyptic number.

It is an amenable number.

4977778769 is a deficient number, since it is larger than the sum of its proper divisors (1).

4977778769 is an equidigital number, since it uses as much as digits as its factorization.

4977778769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 261382464, while the sum is 71.

The square root of 4977778769 is about 70553.3753196826. The cubic root of 4977778769 is about 1707.4389999838.

The spelling of 4977778769 in words is "four billion, nine hundred seventy-seven million, seven hundred seventy-eight thousand, seven hundred sixty-nine".