80549289 has 32 divisors (see below), whose sum is σ = 125491200. Its totient is φ = 50965200.

The previous prime is 80549263. The next prime is 80549291. The reversal of 80549289 is 98294508.

80549289 is a `hidden beast` number, since 80 + 5 + 492 + 89 = 666.

It is not a de Polignac number, because 80549289 - 2⁸ = 80549033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80549299) 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 31 ways as a sum of consecutive naturals, for example, 93342 + ... + 94200.

It is an arithmetic number, because the mean of its divisors is an integer number (3921600).

Almost surely, 2^80549289 is an apocalyptic number.

It is an amenable number.

80549289 is a deficient number, since it is larger than the sum of its proper divisors (44941911).

80549289 is a wasteful number, since it uses less digits than its factorization.

80549289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042 (or 1036 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 80549289 is about 8974.9255707220. The cubic root of 80549289 is about 431.8708622495.

The spelling of 80549289 in words is "eighty million, five hundred forty-nine thousand, two hundred eighty-nine".