998937923 has 2 divisors, whose sum is σ = 998937924. Its totient is φ = 998937922.

The previous prime is 998937911. The next prime is 998937941. The reversal of 998937923 is 329739899.

998937923 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (329739899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 998937923 - 2¹⁰ = 998936899 is a prime.

It is not a weakly prime, because it can be changed into another prime (998937943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499468961 + 499468962.

It is an arithmetic number, because the mean of its divisors is an integer number (499468962).

Almost surely, 2^998937923 is an apocalyptic number.

998937923 is a deficient number, since it is larger than the sum of its proper divisors (1).

998937923 is an equidigital number, since it uses as much as digits as its factorization.

998937923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6613488, while the sum is 59.

The square root of 998937923 is about 31605.9792286207. The cubic root of 998937923 is about 999.6458489252.

The spelling of 998937923 in words is "nine hundred ninety-eight million, nine hundred thirty-seven thousand, nine hundred twenty-three".