2085699829 has 2 divisors, whose sum is σ = 2085699830. Its totient is φ = 2085699828.

The previous prime is 2085699827. The next prime is 2085699851. The reversal of 2085699829 is 9289965802.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1239180804 + 846519025 = 35202^2 + 29095^2 .

It is a cyclic number.

It is not a de Polignac number, because 2085699829 - 2¹ = 2085699827 is a prime.

Together with 2085699827, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2085699827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1042849914 + 1042849915.

It is an arithmetic number, because the mean of its divisors is an integer number (1042849915).

Almost surely, 2^2085699829 is an apocalyptic number.

It is an amenable number.

2085699829 is a deficient number, since it is larger than the sum of its proper divisors (1).

2085699829 is an equidigital number, since it uses as much as digits as its factorization.

2085699829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5598720, while the sum is 58.

The square root of 2085699829 is about 45669.4627623317. The cubic root of 2085699829 is about 1277.6657957849.

The spelling of 2085699829 in words is "two billion, eighty-five million, six hundred ninety-nine thousand, eight hundred twenty-nine".