71008489 has 2 divisors, whose sum is σ = 71008490. Its totient is φ = 71008488.

The previous prime is 71008471. The next prime is 71008519. The reversal of 71008489 is 98480017.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51955264 + 19053225 = 7208^2 + 4365^2 .

It is a cyclic number.

It is not a de Polignac number, because 71008489 - 2²³ = 62619881 is a prime.

It is not a weakly prime, because it can be changed into another prime (71003489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35504244 + 35504245.

It is an arithmetic number, because the mean of its divisors is an integer number (35504245).

Almost surely, 2^71008489 is an apocalyptic number.

It is an amenable number.

71008489 is a deficient number, since it is larger than the sum of its proper divisors (1).

71008489 is an equidigital number, since it uses as much as digits as its factorization.

71008489 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 37.

The square root of 71008489 is about 8426.6534875952. The cubic root of 71008489 is about 414.0982772902.

The spelling of 71008489 in words is "seventy-one million, eight thousand, four hundred eighty-nine".