208798987 has 2 divisors, whose sum is σ = 208798988. Its totient is φ = 208798986.

The previous prime is 208798979. The next prime is 208799023. The reversal of 208798987 is 789897802.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 208798987 - 2³ = 208798979 is a prime.

It is not a weakly prime, because it can be changed into another prime (208738987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104399493 + 104399494.

It is an arithmetic number, because the mean of its divisors is an integer number (104399494).

Almost surely, 2^208798987 is an apocalyptic number.

208798987 is a deficient number, since it is larger than the sum of its proper divisors (1).

208798987 is an equidigital number, since it uses as much as digits as its factorization.

208798987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4064256, while the sum is 58.

The square root of 208798987 is about 14449.8784423953. The cubic root of 208798987 is about 593.2568968642.

The spelling of 208798987 in words is "two hundred eight million, seven hundred ninety-eight thousand, nine hundred eighty-seven".