987446849 has 2 divisors, whose sum is σ = 987446850. Its totient is φ = 987446848.

The previous prime is 987446843. The next prime is 987446851. The reversal of 987446849 is 948644789.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 717436225 + 270010624 = 26785^2 + 16432^2 .

It is a cyclic number.

It is not a de Polignac number, because 987446849 - 2¹⁶ = 987381313 is a prime.

Together with 987446851, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (987446843) 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, 493723424 + 493723425.

It is an arithmetic number, because the mean of its divisors is an integer number (493723425).

Almost surely, 2^987446849 is an apocalyptic number.

It is an amenable number.

987446849 is a deficient number, since it is larger than the sum of its proper divisors (1).

987446849 is an equidigital number, since it uses as much as digits as its factorization.

987446849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13934592, while the sum is 59.

The square root of 987446849 is about 31423.6670202572. The cubic root of 987446849 is about 995.7979841275.

The spelling of 987446849 in words is "nine hundred eighty-seven million, four hundred forty-six thousand, eight hundred forty-nine".