80471249 has 2 divisors, whose sum is σ = 80471250. Its totient is φ = 80471248.

The previous prime is 80471179. The next prime is 80471269. The reversal of 80471249 is 94217408.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80425024 + 46225 = 8968^2 + 215^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80471249 is a prime.

It is not a weakly prime, because it can be changed into another prime (80471269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40235624 + 40235625.

It is an arithmetic number, because the mean of its divisors is an integer number (40235625).

Almost surely, 2^80471249 is an apocalyptic number.

It is an amenable number.

80471249 is a deficient number, since it is larger than the sum of its proper divisors (1).

80471249 is an equidigital number, since it uses as much as digits as its factorization.

80471249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 80471249 is about 8970.5768487874. The cubic root of 80471249 is about 431.7313448070.

The spelling of 80471249 in words is "eighty million, four hundred seventy-one thousand, two hundred forty-nine".