80129917 has 4 divisors (see below), whose sum is σ = 91577056. Its totient is φ = 68682780.

The previous prime is 80129911. The next prime is 80129927. The reversal of 80129917 is 71992108.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80129917 - 2³ = 80129909 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 (80129911) 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 3 ways as a sum of consecutive naturals, for example, 5723559 + ... + 5723572.

It is an arithmetic number, because the mean of its divisors is an integer number (22894264).

Almost surely, 2^80129917 is an apocalyptic number.

It is an amenable number.

80129917 is a deficient number, since it is larger than the sum of its proper divisors (11447139).

80129917 is a wasteful number, since it uses less digits than its factorization.

80129917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11447138.

The product of its (nonzero) digits is 9072, while the sum is 37.

The square root of 80129917 is about 8951.5315449369. The cubic root of 80129917 is about 431.1200599345.

The spelling of 80129917 in words is "eighty million, one hundred twenty-nine thousand, nine hundred seventeen".