71339893 has 2 divisors, whose sum is σ = 71339894. Its totient is φ = 71339892.

The previous prime is 71339869. The next prime is 71339929. The reversal of 71339893 is 39893317.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62441604 + 8898289 = 7902^2 + 2983^2 .

It is an emirp because it is prime and its reverse (39893317) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71339893 - 2⁵ = 71339861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71339833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35669946 + 35669947.

It is an arithmetic number, because the mean of its divisors is an integer number (35669947).

Almost surely, 2^71339893 is an apocalyptic number.

It is an amenable number.

71339893 is a deficient number, since it is larger than the sum of its proper divisors (1).

71339893 is an equidigital number, since it uses as much as digits as its factorization.

71339893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122472, while the sum is 43.

The square root of 71339893 is about 8446.2946313753. The cubic root of 71339893 is about 414.7414909135.

The spelling of 71339893 in words is "seventy-one million, three hundred thirty-nine thousand, eight hundred ninety-three".