80090579 has 4 divisors (see below), whose sum is σ = 81601776. Its totient is φ = 78579384.

The previous prime is 80090557. The next prime is 80090597. The reversal of 80090579 is 97509008.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80090579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80090599) 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 3 ways as a sum of consecutive naturals, for example, 755519 + ... + 755624.

It is an arithmetic number, because the mean of its divisors is an integer number (20400444).

Almost surely, 2^80090579 is an apocalyptic number.

80090579 is a deficient number, since it is larger than the sum of its proper divisors (1511197).

80090579 is a wasteful number, since it uses less digits than its factorization.

80090579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1511196.

The product of its (nonzero) digits is 22680, while the sum is 38.

The square root of 80090579 is about 8949.3339975665. Note that the first 3 decimals coincide. The cubic root of 80090579 is about 431.0494987858.

The spelling of 80090579 in words is "eighty million, ninety thousand, five hundred seventy-nine".