80804889 has 18 divisors (see below), whose sum is σ = 128295258. Its totient is φ = 48972000.

The previous prime is 80804873. The next prime is 80804923. The reversal of 80804889 is 98840808.

It can be written as a sum of positive squares in only one way, i.e., 54641664 + 26163225 = 7392^2 + 5115^2 .

It is not a de Polignac number, because 80804889 - 2⁴ = 80804873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80804089) 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 17 ways as a sum of consecutive naturals, for example, 36012 + ... + 38189.

Almost surely, 2^80804889 is an apocalyptic number.

It is an amenable number.

80804889 is a deficient number, since it is larger than the sum of its proper divisors (47490369).

80804889 is a wasteful number, since it uses less digits than its factorization.

80804889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74229 (or 74215 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 45.

The square root of 80804889 is about 8989.1539646398. The cubic root of 80804889 is about 432.3271859057.

The spelling of 80804889 in words is "eighty million, eight hundred four thousand, eight hundred eighty-nine".