80447549 has 16 divisors (see below), whose sum is σ = 99617280. Its totient is φ = 63638640.

The previous prime is 80447527. The next prime is 80447551. The reversal of 80447549 is 94574408.

It is not a de Polignac number, because 80447549 - 2²⁰ = 79398973 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80447599) 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 15 ways as a sum of consecutive naturals, for example, 12764 + ... + 17994.

It is an arithmetic number, because the mean of its divisors is an integer number (6226080).

Almost surely, 2^80447549 is an apocalyptic number.

It is an amenable number.

80447549 is a deficient number, since it is larger than the sum of its proper divisors (19169731).

80447549 is an equidigital number, since it uses as much as digits as its factorization.

80447549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5277 (or 5251 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 80447549 is about 8969.2557662272. The cubic root of 80447549 is about 431.6889568417.

The spelling of 80447549 in words is "eighty million, four hundred forty-seven thousand, five hundred forty-nine".