986442169 has 2 divisors, whose sum is σ = 986442170. Its totient is φ = 986442168.

The previous prime is 986442167. The next prime is 986442257. The reversal of 986442169 is 961244689.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 950920569 + 35521600 = 30837^2 + 5960^2 .

It is an emirp because it is prime and its reverse (961244689) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 986442169 - 2¹ = 986442167 is a prime.

It is a super-2 number, since 2×986442169² = 1946136305562849122, which contains 22 as substring.

Together with 986442167, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (986442167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493221084 + 493221085.

It is an arithmetic number, because the mean of its divisors is an integer number (493221085).

Almost surely, 2^986442169 is an apocalyptic number.

It is an amenable number.

986442169 is a deficient number, since it is larger than the sum of its proper divisors (1).

986442169 is an equidigital number, since it uses as much as digits as its factorization.

986442169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 746496, while the sum is 49.

The square root of 986442169 is about 31407.6769118634. The cubic root of 986442169 is about 995.4601438958.

The spelling of 986442169 in words is "nine hundred eighty-six million, four hundred forty-two thousand, one hundred sixty-nine".