998467121 has 2 divisors, whose sum is σ = 998467122. Its totient is φ = 998467120.

The previous prime is 998467073. The next prime is 998467229. The reversal of 998467121 is 121764899.

998467121 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 can be written as a sum of positive squares in only one way, i.e., 584914225 + 413552896 = 24185^2 + 20336^2 .

It is an emirp because it is prime and its reverse (121764899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 998467121 - 2²² = 994272817 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (998407121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499233560 + 499233561.

It is an arithmetic number, because the mean of its divisors is an integer number (499233561).

Almost surely, 2^998467121 is an apocalyptic number.

It is an amenable number.

998467121 is a deficient number, since it is larger than the sum of its proper divisors (1).

998467121 is an equidigital number, since it uses as much as digits as its factorization.

998467121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 47.

The square root of 998467121 is about 31598.5303613950. The cubic root of 998467121 is about 999.4887790310.

The spelling of 998467121 in words is "nine hundred ninety-eight million, four hundred sixty-seven thousand, one hundred twenty-one".