80809297 has 4 divisors (see below), whose sum is σ = 80828656. Its totient is φ = 80789940.

The previous prime is 80809273. The next prime is 80809301. The reversal of 80809297 is 79290808.

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 a de Polignac number, because none of the positive numbers 2^k-80809297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80809207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 543 + ... + 12724.

It is an arithmetic number, because the mean of its divisors is an integer number (20207164).

Almost surely, 2^80809297 is an apocalyptic number.

It is an amenable number.

80809297 is a deficient number, since it is larger than the sum of its proper divisors (19359).

80809297 is a wasteful number, since it uses less digits than its factorization.

80809297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19358.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 80809297 is about 8989.3991456604. The cubic root of 80809297 is about 432.3350470785.

The spelling of 80809297 in words is "eighty million, eight hundred nine thousand, two hundred ninety-seven".