80491099 has 8 divisors (see below), whose sum is σ = 90451872. Its totient is φ = 71068800.

The previous prime is 80491093. The next prime is 80491121. The reversal of 80491099 is 99019408.

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 80491099 - 2³ = 80491091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80491091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134302 + ... + 134899.

It is an arithmetic number, because the mean of its divisors is an integer number (11306484).

Almost surely, 2^80491099 is an apocalyptic number.

80491099 is a deficient number, since it is larger than the sum of its proper divisors (9960773).

80491099 is a wasteful number, since it uses less digits than its factorization.

80491099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269237.

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 80491099 is about 8971.6831754136. The cubic root of 80491099 is about 431.7668405596.

The spelling of 80491099 in words is "eighty million, four hundred ninety-one thousand, ninety-nine".