71299049 has 2 divisors, whose sum is σ = 71299050. Its totient is φ = 71299048.

The previous prime is 71299043. The next prime is 71299051. The reversal of 71299049 is 94099217.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64513024 + 6786025 = 8032^2 + 2605^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71299049 is a prime.

Together with 71299051, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 71298997 and 71299015.

It is not a weakly prime, because it can be changed into another prime (71299043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35649524 + 35649525.

It is an arithmetic number, because the mean of its divisors is an integer number (35649525).

Almost surely, 2^71299049 is an apocalyptic number.

It is an amenable number.

71299049 is a deficient number, since it is larger than the sum of its proper divisors (1).

71299049 is an equidigital number, since it uses as much as digits as its factorization.

71299049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 71299049 is about 8443.8764202231. The cubic root of 71299049 is about 414.6623255985.

The spelling of 71299049 in words is "seventy-one million, two hundred ninety-nine thousand, forty-nine".