71116399 has 2 divisors, whose sum is σ = 71116400. Its totient is φ = 71116398.

The previous prime is 71116379. The next prime is 71116469. The reversal of 71116399 is 99361117.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71116399 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71116379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35558199 + 35558200.

It is an arithmetic number, because the mean of its divisors is an integer number (35558200).

Almost surely, 2^71116399 is an apocalyptic number.

71116399 is a deficient number, since it is larger than the sum of its proper divisors (1).

71116399 is an equidigital number, since it uses as much as digits as its factorization.

71116399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10206, while the sum is 37.

The square root of 71116399 is about 8433.0539545292. The cubic root of 71116399 is about 414.3079363936.

The spelling of 71116399 in words is "seventy-one million, one hundred sixteen thousand, three hundred ninety-nine".