6776454449 has 2 divisors, whose sum is σ = 6776454450. Its totient is φ = 6776454448.

The previous prime is 6776454397. The next prime is 6776454467. The reversal of 6776454449 is 9444546776.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5298820849 + 1477633600 = 72793^2 + 38440^2 .

It is a cyclic number.

It is not a de Polignac number, because 6776454449 - 2¹² = 6776450353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6776454394 and 6776454403.

It is not a weakly prime, because it can be changed into another prime (6776454149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3388227224 + 3388227225.

It is an arithmetic number, because the mean of its divisors is an integer number (3388227225).

Almost surely, 2^6776454449 is an apocalyptic number.

It is an amenable number.

6776454449 is a deficient number, since it is larger than the sum of its proper divisors (1).

6776454449 is an equidigital number, since it uses as much as digits as its factorization.

6776454449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20321280, while the sum is 56.

The square root of 6776454449 is about 82319.2228401119. Note that the first 3 decimals coincide. The cubic root of 6776454449 is about 1892.3472836556.

The spelling of 6776454449 in words is "six billion, seven hundred seventy-six million, four hundred fifty-four thousand, four hundred forty-nine".