80871291 has 10 divisors (see below), whose sum is σ = 120807852. Its totient is φ = 53914140.

The previous prime is 80871283. The next prime is 80871293. The reversal of 80871291 is 19217808.

It is not a de Polignac number, because 80871291 - 2³ = 80871283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80871293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 499125 + ... + 499286.

Almost surely, 2^80871291 is an apocalyptic number.

80871291 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

80871291 is a deficient number, since it is larger than the sum of its proper divisors (39936561).

80871291 is an equidigital number, since it uses as much as digits as its factorization.

80871291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998423 (or 998414 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The square root of 80871291 is about 8992.8466572048. The cubic root of 80871291 is about 432.4455761427.

The spelling of 80871291 in words is "eighty million, eight hundred seventy-one thousand, two hundred ninety-one".