80243329 has 2 divisors, whose sum is σ = 80243330. Its totient is φ = 80243328.

The previous prime is 80243311. The next prime is 80243351. The reversal of 80243329 is 92334208.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70308225 + 9935104 = 8385^2 + 3152^2 .

It is a cyclic number.

It is not a de Polignac number, because 80243329 - 2⁹ = 80242817 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80243329.

It is not a weakly prime, because it can be changed into another prime (80243369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40121664 + 40121665.

It is an arithmetic number, because the mean of its divisors is an integer number (40121665).

Almost surely, 2^80243329 is an apocalyptic number.

It is an amenable number.

80243329 is a deficient number, since it is larger than the sum of its proper divisors (1).

80243329 is an equidigital number, since it uses as much as digits as its factorization.

80243329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 80243329 is about 8957.8640869350. The cubic root of 80243329 is about 431.3233595289.

The spelling of 80243329 in words is "eighty million, two hundred forty-three thousand, three hundred twenty-nine".