448210991 has 2 divisors, whose sum is σ = 448210992. Its totient is φ = 448210990.

The previous prime is 448210963. The next prime is 448211047. The reversal of 448210991 is 199012844.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-448210991 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (448210901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224105495 + 224105496.

It is an arithmetic number, because the mean of its divisors is an integer number (224105496).

Almost surely, 2^448210991 is an apocalyptic number.

448210991 is a deficient number, since it is larger than the sum of its proper divisors (1).

448210991 is an equidigital number, since it uses as much as digits as its factorization.

448210991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 448210991 is about 21170.9940956961. The cubic root of 448210991 is about 765.2925766559.

The spelling of 448210991 in words is "four hundred forty-eight million, two hundred ten thousand, nine hundred ninety-one".