80326409 has 2 divisors, whose sum is σ = 80326410. Its totient is φ = 80326408.

The previous prime is 80326369. The next prime is 80326417. The reversal of 80326409 is 90462308.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49000000 + 31326409 = 7000^2 + 5597^2 .

It is a cyclic number.

It is not a de Polignac number, because 80326409 - 2²⁰ = 79277833 is a prime.

It is equal to p_4687340 and since 80326409 and 4687340 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (80326439) 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 as a sum of consecutive naturals, namely, 40163204 + 40163205.

It is an arithmetic number, because the mean of its divisors is an integer number (40163205).

Almost surely, 2^80326409 is an apocalyptic number.

It is an amenable number.

80326409 is a deficient number, since it is larger than the sum of its proper divisors (1).

80326409 is an equidigital number, since it uses as much as digits as its factorization.

80326409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 80326409 is about 8962.5001534170. The cubic root of 80326409 is about 431.4721651896.

It can be divided in two parts, 8032 and 6409, that added together give a palindrome (14441).

The spelling of 80326409 in words is "eighty million, three hundred twenty-six thousand, four hundred nine".