80299409 has 2 divisors, whose sum is σ = 80299410. Its totient is φ = 80299408.

The previous prime is 80299391. The next prime is 80299441. The reversal of 80299409 is 90499208.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74995600 + 5303809 = 8660^2 + 2303^2 .

It is a cyclic number.

It is not a de Polignac number, because 80299409 - 2¹⁶ = 80233873 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (80299469) 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 as a sum of consecutive naturals, namely, 40149704 + 40149705.

It is an arithmetic number, because the mean of its divisors is an integer number (40149705).

Almost surely, 2^80299409 is an apocalyptic number.

It is an amenable number.

80299409 is a deficient number, since it is larger than the sum of its proper divisors (1).

80299409 is an equidigital number, since it uses as much as digits as its factorization.

80299409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 80299409 is about 8960.9937506953. The cubic root of 80299409 is about 431.4238163999.

It can be divided in two parts, 80299 and 409, that added together give a palindrome (80708).

The spelling of 80299409 in words is "eighty million, two hundred ninety-nine thousand, four hundred nine".