80394109 has 2 divisors, whose sum is σ = 80394110. Its totient is φ = 80394108.

The previous prime is 80394089. The next prime is 80394121. The reversal of 80394109 is 90149308.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79388100 + 1006009 = 8910^2 + 1003^2 .

It is a cyclic number.

It is not a de Polignac number, because 80394109 - 2⁵ = 80394077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80394169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40197054 + 40197055.

It is an arithmetic number, because the mean of its divisors is an integer number (40197055).

Almost surely, 2^80394109 is an apocalyptic number.

It is an amenable number.

80394109 is a deficient number, since it is larger than the sum of its proper divisors (1).

80394109 is an equidigital number, since it uses as much as digits as its factorization.

80394109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 80394109 is about 8966.2762058728. The cubic root of 80394109 is about 431.5933476808.

The spelling of 80394109 in words is "eighty million, three hundred ninety-four thousand, one hundred nine".