2087899789 has 2 divisors, whose sum is σ = 2087899790. Its totient is φ = 2087899788.

The previous prime is 2087899733. The next prime is 2087899799. The reversal of 2087899789 is 9879987802.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1393155625 + 694744164 = 37325^2 + 26358^2 .

It is a cyclic number.

It is not a de Polignac number, because 2087899789 - 2¹⁹ = 2087375501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2087899799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1043949894 + 1043949895.

It is an arithmetic number, because the mean of its divisors is an integer number (1043949895).

Almost surely, 2^2087899789 is an apocalyptic number.

It is an amenable number.

2087899789 is a deficient number, since it is larger than the sum of its proper divisors (1).

2087899789 is an equidigital number, since it uses as much as digits as its factorization.

2087899789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36578304, while the sum is 67.

The square root of 2087899789 is about 45693.5420929479. The cubic root of 2087899789 is about 1278.1148578404.

The spelling of 2087899789 in words is "two billion, eighty-seven million, eight hundred ninety-nine thousand, seven hundred eighty-nine".