80191799 has 8 divisors (see below), whose sum is σ = 84584880. Its totient is φ = 75816000.

The previous prime is 80191789. The next prime is 80191801. The reversal of 80191799 is 99719108.

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 80191799 - 2²⁰ = 79143223 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 (80191789) 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, 5849 + ... + 13949.

It is an arithmetic number, because the mean of its divisors is an integer number (10573110).

Almost surely, 2^80191799 is an apocalyptic number.

80191799 is a deficient number, since it is larger than the sum of its proper divisors (4393081).

80191799 is a wasteful number, since it uses less digits than its factorization.

80191799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8641.

The product of its (nonzero) digits is 40824, while the sum is 44.

The square root of 80191799 is about 8954.9873813423. The cubic root of 80191799 is about 431.2310118644.

The spelling of 80191799 in words is "eighty million, one hundred ninety-one thousand, seven hundred ninety-nine".