448933993 has 4 divisors (see below), whose sum is σ = 450590848. Its totient is φ = 447277140.

The previous prime is 448933981. The next prime is 448934021. The reversal of 448933993 is 399339844.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-448933993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 448933993.

It is not an unprimeable number, because it can be changed into a prime (448933963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 828021 + ... + 828562.

It is an arithmetic number, because the mean of its divisors is an integer number (112647712).

Almost surely, 2^448933993 is an apocalyptic number.

It is an amenable number.

448933993 is a deficient number, since it is larger than the sum of its proper divisors (1656855).

448933993 is a wasteful number, since it uses less digits than its factorization.

448933993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1656854.

The product of its digits is 2519424, while the sum is 52.

The square root of 448933993 is about 21188.0625117069. The cubic root of 448933993 is about 765.7038493453.

The spelling of 448933993 in words is "four hundred forty-eight million, nine hundred thirty-three thousand, nine hundred ninety-three".