447776449 has 2 divisors, whose sum is σ = 447776450. Its totient is φ = 447776448.

The previous prime is 447776437. The next prime is 447776507. The reversal of 447776449 is 944677744.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 428697025 + 19079424 = 20705^2 + 4368^2 .

It is a cyclic number.

It is not a de Polignac number, because 447776449 - 2⁷ = 447776321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 447776396 and 447776405.

It is not a weakly prime, because it can be changed into another prime (447716449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223888224 + 223888225.

It is an arithmetic number, because the mean of its divisors is an integer number (223888225).

Almost surely, 2^447776449 is an apocalyptic number.

It is an amenable number.

447776449 is a deficient number, since it is larger than the sum of its proper divisors (1).

447776449 is an equidigital number, since it uses as much as digits as its factorization.

447776449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4741632, while the sum is 52.

The square root of 447776449 is about 21160.7289335694. The cubic root of 447776449 is about 765.0451788147.

The spelling of 447776449 in words is "four hundred forty-seven million, seven hundred seventy-six thousand, four hundred forty-nine".