71399 has 2 divisors, whose sum is σ = 71400. Its totient is φ = 71398.

The previous prime is 71389. The next prime is 71411. The reversal of 71399 is 99317.

It is a weak prime.

It is an emirp because it is prime and its reverse (99317) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71399 - 2⁸ = 71143 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 71399.

It is not a weakly prime, because it can be changed into another prime (71329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35699 + 35700.

It is an arithmetic number, because the mean of its divisors is an integer number (35700).

2⁷¹³⁹⁹ is an apocalyptic number.

71399 is a deficient number, since it is larger than the sum of its proper divisors (1).

71399 is an equidigital number, since it uses as much as digits as its factorization.

71399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1701, while the sum is 29.

The square root of 71399 is about 267.2059131082. The cubic root of 71399 is about 41.4856000749.

The spelling of 71399 in words is "seventy-one thousand, three hundred ninety-nine".