987856967 has 2 divisors, whose sum is σ = 987856968. Its totient is φ = 987856966.

The previous prime is 987856921. The next prime is 987856973. The reversal of 987856967 is 769658789.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 987856967 - 2⁸ = 987856711 is a prime.

It is a super-3 number, since 3×987856967³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (987856267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493928483 + 493928484.

It is an arithmetic number, because the mean of its divisors is an integer number (493928484).

Almost surely, 2^987856967 is an apocalyptic number.

987856967 is a deficient number, since it is larger than the sum of its proper divisors (1).

987856967 is an equidigital number, since it uses as much as digits as its factorization.

987856967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45722880, while the sum is 65.

The square root of 987856967 is about 31430.1919656880. The cubic root of 987856967 is about 995.9358272095.

The spelling of 987856967 in words is "nine hundred eighty-seven million, eight hundred fifty-six thousand, nine hundred sixty-seven".