987870329 has 2 divisors, whose sum is σ = 987870330. Its totient is φ = 987870328.

The previous prime is 987870293. The next prime is 987870337. The reversal of 987870329 is 923078789.

Together with previous prime (987870293) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 941262400 + 46607929 = 30680^2 + 6827^2 .

It is a cyclic number.

It is not a de Polignac number, because 987870329 - 2²⁴ = 971093113 is a prime.

It is a super-3 number, since 3×987870329³ (a number of 28 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (987870229) 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, 493935164 + 493935165.

It is an arithmetic number, because the mean of its divisors is an integer number (493935165).

Almost surely, 2^987870329 is an apocalyptic number.

It is an amenable number.

987870329 is a deficient number, since it is larger than the sum of its proper divisors (1).

987870329 is an equidigital number, since it uses as much as digits as its factorization.

987870329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1524096, while the sum is 53.

The square root of 987870329 is about 31430.4045312815. The cubic root of 987870329 is about 995.9403176148.

The spelling of 987870329 in words is "nine hundred eighty-seven million, eight hundred seventy thousand, three hundred twenty-nine".