80409871 has 8 divisors (see below), whose sum is σ = 82494720. Its totient is φ = 78334872.

The previous prime is 80409859. The next prime is 80409887. The reversal of 80409871 is 17890408.

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 80409871 - 2¹⁵ = 80377103 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80409871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80409811) 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, 15786 + ... + 20248.

It is an arithmetic number, because the mean of its divisors is an integer number (10311840).

Almost surely, 2^80409871 is an apocalyptic number.

80409871 is a deficient number, since it is larger than the sum of its proper divisors (2084849).

80409871 is a wasteful number, since it uses less digits than its factorization.

80409871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4925.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 80409871 is about 8967.1551230031. The cubic root of 80409871 is about 431.6215517781.

The spelling of 80409871 in words is "eighty million, four hundred nine thousand, eight hundred seventy-one".