83699047889 has 2 divisors, whose sum is σ = 83699047890. Its totient is φ = 83699047888.

The previous prime is 83699047871. The next prime is 83699047891. The reversal of 83699047889 is 98874099638.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48315556864 + 35383491025 = 219808^2 + 188105^2 .

It is a cyclic number.

It is not a de Polignac number, because 83699047889 - 2⁸ = 83699047633 is a prime.

Together with 83699047891, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (83699047849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41849523944 + 41849523945.

It is an arithmetic number, because the mean of its divisors is an integer number (41849523945).

Almost surely, 2^83699047889 is an apocalyptic number.

It is an amenable number.

83699047889 is a deficient number, since it is larger than the sum of its proper divisors (1).

83699047889 is an equidigital number, since it uses as much as digits as its factorization.

83699047889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 188116992, while the sum is 71.

The spelling of 83699047889 in words is "eighty-three billion, six hundred ninety-nine million, forty-seven thousand, eight hundred eighty-nine".