448974509 has 2 divisors, whose sum is σ = 448974510. Its totient is φ = 448974508.

The previous prime is 448974499. The next prime is 448974511. The reversal of 448974509 is 905479844.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 319515625 + 129458884 = 17875^2 + 11378^2 .

It is a cyclic number.

It is not a de Polignac number, because 448974509 - 2¹² = 448970413 is a prime.

Together with 448974511, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (448974529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224487254 + 224487255.

It is an arithmetic number, because the mean of its divisors is an integer number (224487255).

Almost surely, 2^448974509 is an apocalyptic number.

It is an amenable number.

448974509 is a deficient number, since it is larger than the sum of its proper divisors (1).

448974509 is an equidigital number, since it uses as much as digits as its factorization.

448974509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1451520, while the sum is 50.

The square root of 448974509 is about 21189.0185945456. The cubic root of 448974509 is about 765.7268834100.

The spelling of 448974509 in words is "four hundred forty-eight million, nine hundred seventy-four thousand, five hundred nine".