448842649 has 2 divisors, whose sum is σ = 448842650. Its totient is φ = 448842648.

The previous prime is 448842623. The next prime is 448842659. The reversal of 448842649 is 946248844.

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., 385926025 + 62916624 = 19645^2 + 7932^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-448842649 is a prime.

It is a super-2 number, since 2×448842649² = 402919447122674402, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (448842659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224421324 + 224421325.

It is an arithmetic number, because the mean of its divisors is an integer number (224421325).

Almost surely, 2^448842649 is an apocalyptic number.

It is an amenable number.

448842649 is a deficient number, since it is larger than the sum of its proper divisors (1).

448842649 is an equidigital number, since it uses as much as digits as its factorization.

448842649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1769472, while the sum is 49.

The square root of 448842649 is about 21185.9068486577. The cubic root of 448842649 is about 765.6519135762.

The spelling of 448842649 in words is "four hundred forty-eight million, eight hundred forty-two thousand, six hundred forty-nine".