448394621 has 2 divisors, whose sum is σ = 448394622. Its totient is φ = 448394620.

The previous prime is 448394579. The next prime is 448394657. The reversal of 448394621 is 126493844.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 393427225 + 54967396 = 19835^2 + 7414^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-448394621 is a prime.

It is a super-2 number, since 2×448394621² = 402115472283467282, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (448324621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224197310 + 224197311.

It is an arithmetic number, because the mean of its divisors is an integer number (224197311).

Almost surely, 2^448394621 is an apocalyptic number.

It is an amenable number.

448394621 is a deficient number, since it is larger than the sum of its proper divisors (1).

448394621 is an equidigital number, since it uses as much as digits as its factorization.

448394621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 165888, while the sum is 41.

The square root of 448394621 is about 21175.3304814825. The cubic root of 448394621 is about 765.3970746799.

The spelling of 448394621 in words is "four hundred forty-eight million, three hundred ninety-four thousand, six hundred twenty-one".