998224523 has 2 divisors, whose sum is σ = 998224524. Its totient is φ = 998224522.

The previous prime is 998224519. The next prime is 998224529. The reversal of 998224523 is 325422899.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 998224523 - 2² = 998224519 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (998224529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499112261 + 499112262.

It is an arithmetic number, because the mean of its divisors is an integer number (499112262).

Almost surely, 2^998224523 is an apocalyptic number.

998224523 is a deficient number, since it is larger than the sum of its proper divisors (1).

998224523 is an equidigital number, since it uses as much as digits as its factorization.

998224523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 44.

The square root of 998224523 is about 31594.6913737102. The cubic root of 998224523 is about 999.4078237298.

The spelling of 998224523 in words is "nine hundred ninety-eight million, two hundred twenty-four thousand, five hundred twenty-three".