71083399 has 2 divisors, whose sum is σ = 71083400. Its totient is φ = 71083398.

The previous prime is 71083391. The next prime is 71083421. The reversal of 71083399 is 99338017.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71083399 - 2³ = 71083391 is a prime.

It is a super-2 number, since 2×71083399² = 10105699226786402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71083391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35541699 + 35541700.

It is an arithmetic number, because the mean of its divisors is an integer number (35541700).

Almost surely, 2^71083399 is an apocalyptic number.

71083399 is a deficient number, since it is larger than the sum of its proper divisors (1).

71083399 is an equidigital number, since it uses as much as digits as its factorization.

71083399 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 40.

The square root of 71083399 is about 8431.0971409420. The cubic root of 71083399 is about 414.2438429853.

The spelling of 71083399 in words is "seventy-one million, eighty-three thousand, three hundred ninety-nine".