80448889 has 4 divisors (see below), whose sum is σ = 80893540. Its totient is φ = 80004240.

The previous prime is 80448887. The next prime is 80448911. The reversal of 80448889 is 98884408.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36000000 + 44448889 = 6000^2 + 6667^2 .

It is a cyclic number.

It is not a de Polignac number, because 80448889 - 2¹ = 80448887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80448883) 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, 222054 + ... + 222415.

It is an arithmetic number, because the mean of its divisors is an integer number (20223385).

Almost surely, 2^80448889 is an apocalyptic number.

It is an amenable number.

80448889 is a deficient number, since it is larger than the sum of its proper divisors (444651).

80448889 is a wasteful number, since it uses less digits than its factorization.

80448889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444650.

The product of its (nonzero) digits is 589824, while the sum is 49.

The square root of 80448889 is about 8969.3304655364. The cubic root of 80448889 is about 431.6913536829.

The spelling of 80448889 in words is "eighty million, four hundred forty-eight thousand, eight hundred eighty-nine".