8774780449 has 2 divisors, whose sum is σ = 8774780450. Its totient is φ = 8774780448.

The previous prime is 8774780389. The next prime is 8774780459. The reversal of 8774780449 is 9440874778.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8687544849 + 87235600 = 93207^2 + 9340^2 .

It is a cyclic number.

It is not a de Polignac number, because 8774780449 - 2⁷ = 8774780321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8774780393 and 8774780402.

It is not a weakly prime, because it can be changed into another prime (8774780459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4387390224 + 4387390225.

It is an arithmetic number, because the mean of its divisors is an integer number (4387390225).

Almost surely, 2^8774780449 is an apocalyptic number.

It is an amenable number.

8774780449 is a deficient number, since it is larger than the sum of its proper divisors (1).

8774780449 is an equidigital number, since it uses as much as digits as its factorization.

8774780449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12644352, while the sum is 58.

The square root of 8774780449 is about 93673.7980921026. The cubic root of 8774780449 is about 2062.5860983170.

The spelling of 8774780449 in words is "eight billion, seven hundred seventy-four million, seven hundred eighty thousand, four hundred forty-nine".