448897777889 has 4 divisors (see below), whose sum is σ = 489706666800. Its totient is φ = 408088888980.

The previous prime is 448897777879. The next prime is 448897777907. The reversal of 448897777889 is 988777798844.

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-448897777889 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 448897777889.

It is not an unprimeable number, because it can be changed into a prime (448897777879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20404444439 + ... + 20404444460.

It is an arithmetic number, because the mean of its divisors is an integer number (122426666700).

Almost surely, 2^448897777889 is an apocalyptic number.

It is an amenable number.

448897777889 is a deficient number, since it is larger than the sum of its proper divisors (40808888911).

448897777889 is a wasteful number, since it uses less digits than its factorization.

448897777889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40808888910.

The product of its digits is 12745506816, while the sum is 86.

The spelling of 448897777889 in words is "four hundred forty-eight billion, eight hundred ninety-seven million, seven hundred seventy-seven thousand, eight hundred eighty-nine".