71789899 has 2 divisors, whose sum is σ = 71789900. Its totient is φ = 71789898.

The previous prime is 71789881. The next prime is 71789909. The reversal of 71789899 is 99898717.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71789899 - 2⁹ = 71789387 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (71789699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35894949 + 35894950.

It is an arithmetic number, because the mean of its divisors is an integer number (35894950).

Almost surely, 2^71789899 is an apocalyptic number.

71789899 is a deficient number, since it is larger than the sum of its proper divisors (1).

71789899 is an equidigital number, since it uses as much as digits as its factorization.

71789899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2286144, while the sum is 58.

The square root of 71789899 is about 8472.8920092257. The cubic root of 71789899 is about 415.6117150973.

The spelling of 71789899 in words is "seventy-one million, seven hundred eighty-nine thousand, eight hundred ninety-nine".