989724107 has 2 divisors, whose sum is σ = 989724108. Its totient is φ = 989724106.

The previous prime is 989724097. The next prime is 989724181. The reversal of 989724107 is 701427989.

It is a weak prime.

It is an emirp because it is prime and its reverse (701427989) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 989724107 - 2⁴ = 989724091 is a prime.

It is not a weakly prime, because it can be changed into another prime (989724607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494862053 + 494862054.

It is an arithmetic number, because the mean of its divisors is an integer number (494862054).

Almost surely, 2^989724107 is an apocalyptic number.

989724107 is a deficient number, since it is larger than the sum of its proper divisors (1).

989724107 is an equidigital number, since it uses as much as digits as its factorization.

989724107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 254016, while the sum is 47.

The square root of 989724107 is about 31459.8809120442. The cubic root of 989724107 is about 996.5629022271.

The spelling of 989724107 in words is "nine hundred eighty-nine million, seven hundred twenty-four thousand, one hundred seven".