80109349 has 2 divisors, whose sum is σ = 80109350. Its totient is φ = 80109348.

The previous prime is 80109347. The next prime is 80109373. The reversal of 80109349 is 94390108.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55606849 + 24502500 = 7457^2 + 4950^2 .

It is a cyclic number.

It is not a de Polignac number, because 80109349 - 2¹ = 80109347 is a prime.

Together with 80109347, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80109343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40054674 + 40054675.

It is an arithmetic number, because the mean of its divisors is an integer number (40054675).

Almost surely, 2^80109349 is an apocalyptic number.

It is an amenable number.

80109349 is a deficient number, since it is larger than the sum of its proper divisors (1).

80109349 is an equidigital number, since it uses as much as digits as its factorization.

80109349 is an evil number, because the sum of its binary digits is even.

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

The square root of 80109349 is about 8950.3826175198. The cubic root of 80109349 is about 431.0831696920.

The spelling of 80109349 in words is "eighty million, one hundred nine thousand, three hundred forty-nine".