989974344223 has 2 divisors, whose sum is σ = 989974344224. Its totient is φ = 989974344222.

The previous prime is 989974344173. The next prime is 989974344299. The reversal of 989974344223 is 322443479989.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 989974344223 - 2²⁵ = 989940789791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (989974344323) 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, 494987172111 + 494987172112.

It is an arithmetic number, because the mean of its divisors is an integer number (494987172112).

Almost surely, 2^989974344223 is an apocalyptic number.

989974344223 is a deficient number, since it is larger than the sum of its proper divisors (1).

989974344223 is an equidigital number, since it uses as much as digits as its factorization.

989974344223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 94058496, while the sum is 64.

The spelling of 989974344223 in words is "nine hundred eighty-nine billion, nine hundred seventy-four million, three hundred forty-four thousand, two hundred twenty-three".