9800425409 has 2 divisors, whose sum is σ = 9800425410. Its totient is φ = 9800425408.

The previous prime is 9800425403. The next prime is 9800425417. The reversal of 9800425409 is 9045240089.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9251554225 + 548871184 = 96185^2 + 23428^2 .

It is a cyclic number.

It is not a de Polignac number, because 9800425409 - 2⁸ = 9800425153 is a prime.

It is not a weakly prime, because it can be changed into another prime (9800425403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4900212704 + 4900212705.

It is an arithmetic number, because the mean of its divisors is an integer number (4900212705).

Almost surely, 2^9800425409 is an apocalyptic number.

It is an amenable number.

9800425409 is a deficient number, since it is larger than the sum of its proper divisors (1).

9800425409 is an equidigital number, since it uses as much as digits as its factorization.

9800425409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 9800425409 is about 98997.0979827187. The cubic root of 9800425409 is about 2140.0059254647.

The spelling of 9800425409 in words is "nine billion, eight hundred million, four hundred twenty-five thousand, four hundred nine".