448990191 has 24 divisors (see below), whose sum is σ = 699267296. Its totient is φ = 275970240.

The previous prime is 448990169. The next prime is 448990211. The reversal of 448990191 is 191099844.

It is a Wieferich number.

It is not a de Polignac number, because 448990191 - 2⁷ = 448990063 is a prime.

It is a super-2 number, since 2×448990191² = 403184383228432962, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (448990141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 126126 + ... + 129636.

Almost surely, 2^448990191 is an apocalyptic number.

448990191 is a deficient number, since it is larger than the sum of its proper divisors (250277105).

448990191 is a wasteful number, since it uses less digits than its factorization.

448990191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4623 (or 4620 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The square root of 448990191 is about 21189.3886414875. The cubic root of 448990191 is about 765.7357985332.

The spelling of 448990191 in words is "four hundred forty-eight million, nine hundred ninety thousand, one hundred ninety-one".