998274427 has 2 divisors, whose sum is σ = 998274428. Its totient is φ = 998274426.

The previous prime is 998274401. The next prime is 998274443. The reversal of 998274427 is 724472899.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-998274427 is a prime.

It is not a weakly prime, because it can be changed into another prime (998274457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499137213 + 499137214.

It is an arithmetic number, because the mean of its divisors is an integer number (499137214).

Almost surely, 2^998274427 is an apocalyptic number.

998274427 is a deficient number, since it is larger than the sum of its proper divisors (1).

998274427 is an equidigital number, since it uses as much as digits as its factorization.

998274427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2032128, while the sum is 52.

The square root of 998274427 is about 31595.4811167673. The cubic root of 998274427 is about 999.4244778378.

The spelling of 998274427 in words is "nine hundred ninety-eight million, two hundred seventy-four thousand, four hundred twenty-seven".