448509977 has 2 divisors, whose sum is σ = 448509978. Its totient is φ = 448509976.

The previous prime is 448509961. The next prime is 448509989. The reversal of 448509977 is 779905844.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 424195216 + 24314761 = 20596^2 + 4931^2 .

It is a cyclic number.

It is not a de Polignac number, because 448509977 - 2⁴ = 448509961 is a prime.

It is a super-2 number, since 2×448509977² = 402322398937081058, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (448509077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224254988 + 224254989.

It is an arithmetic number, because the mean of its divisors is an integer number (224254989).

Almost surely, 2^448509977 is an apocalyptic number.

It is an amenable number.

448509977 is a deficient number, since it is larger than the sum of its proper divisors (1).

448509977 is an equidigital number, since it uses as much as digits as its factorization.

448509977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2540160, while the sum is 53.

The square root of 448509977 is about 21178.0541362987. The cubic root of 448509977 is about 765.4627055404.

The spelling of 448509977 in words is "four hundred forty-eight million, five hundred nine thousand, nine hundred seventy-seven".