998147461 has 2 divisors, whose sum is σ = 998147462. Its totient is φ = 998147460.

The previous prime is 998147443. The next prime is 998147543. The reversal of 998147461 is 164741899.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 929091361 + 69056100 = 30481^2 + 8310^2 .

It is a cyclic number.

It is not a de Polignac number, because 998147461 - 2⁵ = 998147429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998147561) 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, 499073730 + 499073731.

It is an arithmetic number, because the mean of its divisors is an integer number (499073731).

Almost surely, 2^998147461 is an apocalyptic number.

It is an amenable number.

998147461 is a deficient number, since it is larger than the sum of its proper divisors (1).

998147461 is an equidigital number, since it uses as much as digits as its factorization.

998147461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 49.

The square root of 998147461 is about 31593.4718098534. The cubic root of 998147461 is about 999.3821052848.

The spelling of 998147461 in words is "nine hundred ninety-eight million, one hundred forty-seven thousand, four hundred sixty-one".