98961409 has 2 divisors, whose sum is σ = 98961410. Its totient is φ = 98961408.

The previous prime is 98961397. The next prime is 98961439. The reversal of 98961409 is 90416989.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66471409 + 32490000 = 8153^2 + 5700^2 .

It is a cyclic number.

It is not a de Polignac number, because 98961409 - 2⁷ = 98961281 is a prime.

It is not a weakly prime, because it can be changed into another prime (98961439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49480704 + 49480705.

It is an arithmetic number, because the mean of its divisors is an integer number (49480705).

Almost surely, 2^98961409 is an apocalyptic number.

It is an amenable number.

98961409 is a deficient number, since it is larger than the sum of its proper divisors (1).

98961409 is an equidigital number, since it uses as much as digits as its factorization.

98961409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 46.

The square root of 98961409 is about 9947.9349113271. The cubic root of 98961409 is about 462.5463838555.

The spelling of 98961409 in words is "ninety-eight million, nine hundred sixty-one thousand, four hundred nine".