80416909 has 2 divisors, whose sum is σ = 80416910. Its totient is φ = 80416908.

The previous prime is 80416841. The next prime is 80416927. The reversal of 80416909 is 90961408.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77492809 + 2924100 = 8803^2 + 1710^2 .

It is a cyclic number.

It is not a de Polignac number, because 80416909 - 2²³ = 72028301 is a prime.

It is a super-2 number, since 2×80416909² = 12933758506228562, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80416009) 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, 40208454 + 40208455.

It is an arithmetic number, because the mean of its divisors is an integer number (40208455).

Almost surely, 2^80416909 is an apocalyptic number.

It is an amenable number.

80416909 is a deficient number, since it is larger than the sum of its proper divisors (1).

80416909 is an equidigital number, since it uses as much as digits as its factorization.

80416909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 80416909 is about 8967.5475465704. The cubic root of 80416909 is about 431.6341441950.

The spelling of 80416909 in words is "eighty million, four hundred sixteen thousand, nine hundred nine".