80344989 has 6 divisors (see below), whose sum is σ = 116053886. Its totient is φ = 53563320.

The previous prime is 80344987. The next prime is 80344997. The reversal of 80344989 is 98944308.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 80245764 + 99225 = 8958^2 + 315^2 .

It is not a de Polignac number, because 80344989 - 2¹ = 80344987 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80344987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4463602 + ... + 4463619.

Almost surely, 2^80344989 is an apocalyptic number.

It is an amenable number.

80344989 is a deficient number, since it is larger than the sum of its proper divisors (35708897).

80344989 is a wasteful number, since it uses less digits than its factorization.

80344989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8927227 (or 8927224 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 80344989 is about 8963.5366346102. The cubic root of 80344989 is about 431.5054300270.

The spelling of 80344989 in words is "eighty million, three hundred forty-four thousand, nine hundred eighty-nine".