80028089 has 4 divisors (see below), whose sum is σ = 80172324. Its totient is φ = 79883856.

The previous prime is 80028079. The next prime is 80028101. The reversal of 80028089 is 98082008.

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 50651689 + 29376400 = 7117^2 + 5420^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80028089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80028079) 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, 71282 + ... + 72395.

It is an arithmetic number, because the mean of its divisors is an integer number (20043081).

Almost surely, 2^80028089 is an apocalyptic number.

It is an amenable number.

80028089 is a deficient number, since it is larger than the sum of its proper divisors (144235).

80028089 is a wasteful number, since it uses less digits than its factorization.

80028089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144234.

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 80028089 is about 8945.8419950276. The cubic root of 80028089 is about 430.9373620353.

The spelling of 80028089 in words is "eighty million, twenty-eight thousand, eighty-nine".