989676349 has 2 divisors, whose sum is σ = 989676350. Its totient is φ = 989676348.

The previous prime is 989676341. The next prime is 989676377. The reversal of 989676349 is 943676989.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 980128249 + 9548100 = 31307^2 + 3090^2 .

It is an emirp because it is prime and its reverse (943676989) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 989676349 - 2³ = 989676341 is a prime.

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 (989676341) 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, 494838174 + 494838175.

It is an arithmetic number, because the mean of its divisors is an integer number (494838175).

Almost surely, 2^989676349 is an apocalyptic number.

It is an amenable number.

989676349 is a deficient number, since it is larger than the sum of its proper divisors (1).

989676349 is an equidigital number, since it uses as much as digits as its factorization.

989676349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17635968, while the sum is 61.

The square root of 989676349 is about 31459.1218726779. The cubic root of 989676349 is about 996.5468726365.

It can be divided in two parts, 989676 and 349, that added together give a square (990025 = 995²).

The spelling of 989676349 in words is "nine hundred eighty-nine million, six hundred seventy-six thousand, three hundred forty-nine".