80493409 has 2 divisors, whose sum is σ = 80493410. Its totient is φ = 80493408.

The previous prime is 80493383. The next prime is 80493431. The reversal of 80493409 is 90439408.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72199009 + 8294400 = 8497^2 + 2880^2 .

It is a cyclic number.

It is not a de Polignac number, because 80493409 - 2⁹ = 80492897 is a prime.

It is not a weakly prime, because it can be changed into another prime (80493109) 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, 40246704 + 40246705.

It is an arithmetic number, because the mean of its divisors is an integer number (40246705).

Almost surely, 2^80493409 is an apocalyptic number.

It is an amenable number.

80493409 is a deficient number, since it is larger than the sum of its proper divisors (1).

80493409 is an equidigital number, since it uses as much as digits as its factorization.

80493409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 80493409 is about 8971.8119128747. The cubic root of 80493409 is about 431.7709709205.

The spelling of 80493409 in words is "eighty million, four hundred ninety-three thousand, four hundred nine".