80871499 has 4 divisors (see below), whose sum is σ = 85628664. Its totient is φ = 76114336.

The previous prime is 80871493. The next prime is 80871509. The reversal of 80871499 is 99417808.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 80871499 - 2³ = 80871491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80871491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2378557 + ... + 2378590.

It is an arithmetic number, because the mean of its divisors is an integer number (21407166).

Almost surely, 2^80871499 is an apocalyptic number.

80871499 is a deficient number, since it is larger than the sum of its proper divisors (4757165).

80871499 is a wasteful number, since it uses less digits than its factorization.

80871499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4757164.

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 80871499 is about 8992.8582219448. The cubic root of 80871499 is about 432.4459468907.

The spelling of 80871499 in words is "eighty million, eight hundred seventy-one thousand, four hundred ninety-nine".