80992109 has 8 divisors (see below), whose sum is σ = 90022752. Its totient is φ = 72239440.

The previous prime is 80992031. The next prime is 80992111. The reversal of 80992109 is 90129908.

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 80992109 - 2²⁰ = 79943533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80992159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68879 + ... + 70044.

It is an arithmetic number, because the mean of its divisors is an integer number (11252844).

Almost surely, 2^80992109 is an apocalyptic number.

It is an amenable number.

80992109 is a deficient number, since it is larger than the sum of its proper divisors (9030643).

80992109 is a wasteful number, since it uses less digits than its factorization.

80992109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138987.

The product of its (nonzero) digits is 11664, while the sum is 38.

The square root of 80992109 is about 8999.5616004337. The cubic root of 80992109 is about 432.6608202762.

The spelling of 80992109 in words is "eighty million, nine hundred ninety-two thousand, one hundred nine".