80249249 has 2 divisors, whose sum is σ = 80249250. Its totient is φ = 80249248.

The previous prime is 80249237. The next prime is 80249291. The reversal of 80249249 is 94294208.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71098624 + 9150625 = 8432^2 + 3025^2 .

It is a cyclic number.

It is not a de Polignac number, because 80249249 - 2⁴ = 80249233 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80249209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40124624 + 40124625.

It is an arithmetic number, because the mean of its divisors is an integer number (40124625).

Almost surely, 2^80249249 is an apocalyptic number.

It is an amenable number.

80249249 is a deficient number, since it is larger than the sum of its proper divisors (1).

80249249 is an equidigital number, since it uses as much as digits as its factorization.

80249249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 80249249 is about 8958.1945167539. The cubic root of 80249249 is about 431.3339663150. Note that the first 3 decimals are identical.

The spelling of 80249249 in words is "eighty million, two hundred forty-nine thousand, two hundred forty-nine".