80506199 has 4 divisors (see below), whose sum is σ = 80641200. Its totient is φ = 80371200.

The previous prime is 80506183. The next prime is 80506207. The reversal of 80506199 is 99160508.

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 80506199 - 2⁴ = 80506183 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 (80506399) 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, 66602 + ... + 67799.

It is an arithmetic number, because the mean of its divisors is an integer number (20160300).

Almost surely, 2^80506199 is an apocalyptic number.

80506199 is a deficient number, since it is larger than the sum of its proper divisors (135001).

80506199 is a wasteful number, since it uses less digits than its factorization.

80506199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135000.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 80506199 is about 8972.5246725768. The cubic root of 80506199 is about 431.7938384585.

The spelling of 80506199 in words is "eighty million, five hundred six thousand, one hundred ninety-nine".