987956219 has 2 divisors, whose sum is σ = 987956220. Its totient is φ = 987956218.

The previous prime is 987956201. The next prime is 987956297. The reversal of 987956219 is 912659789.

It is a weak prime.

It is an emirp because it is prime and its reverse (912659789) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 987956219 - 2²⁰ = 986907643 is a prime.

It is a super-2 number, since 2×987956219² = 1952114981321551922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (987956119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493978109 + 493978110.

It is an arithmetic number, because the mean of its divisors is an integer number (493978110).

Almost surely, 2^987956219 is an apocalyptic number.

987956219 is a deficient number, since it is larger than the sum of its proper divisors (1).

987956219 is an equidigital number, since it uses as much as digits as its factorization.

987956219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2449440, while the sum is 56.

The square root of 987956219 is about 31431.7708537079. The cubic root of 987956219 is about 995.9691806590.

The spelling of 987956219 in words is "nine hundred eighty-seven million, nine hundred fifty-six thousand, two hundred nineteen".