71003389 has 2 divisors, whose sum is σ = 71003390. Its totient is φ = 71003388.

The previous prime is 71003353. The next prime is 71003453. The reversal of 71003389 is 98330017.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47403225 + 23600164 = 6885^2 + 4858^2 .

It is a cyclic number.

It is not a de Polignac number, because 71003389 - 2¹¹ = 71001341 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71003389.

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35501694 + 35501695.

It is an arithmetic number, because the mean of its divisors is an integer number (35501695).

Almost surely, 2^71003389 is an apocalyptic number.

It is an amenable number.

71003389 is a deficient number, since it is larger than the sum of its proper divisors (1).

71003389 is an equidigital number, since it uses as much as digits as its factorization.

71003389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 71003389 is about 8426.3508709286. The cubic root of 71003389 is about 414.0883632090.

The spelling of 71003389 in words is "seventy-one million, three thousand, three hundred eighty-nine".