80412809 has 8 divisors (see below), whose sum is σ = 80994720. Its totient is φ = 79833600.

The previous prime is 80412799. The next prime is 80412847. The reversal of 80412809 is 90821408.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80412809 - 2¹⁶ = 80347273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80412859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125129 + ... + 125769.

It is an arithmetic number, because the mean of its divisors is an integer number (10124340).

Almost surely, 2^80412809 is an apocalyptic number.

It is an amenable number.

80412809 is a deficient number, since it is larger than the sum of its proper divisors (581911).

80412809 is a wasteful number, since it uses less digits than its factorization.

80412809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 80412809 is about 8967.3189415789. The cubic root of 80412809 is about 431.6268085485.

The spelling of 80412809 in words is "eighty million, four hundred twelve thousand, eight hundred nine".