9993649 has 2 divisors, whose sum is σ = 9993650. Its totient is φ = 9993648.

The previous prime is 9993629. The next prime is 9993679. The reversal of 9993649 is 9463999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7535025 + 2458624 = 2745^2 + 1568^2 .

It is a cyclic number.

It is not a de Polignac number, because 9993649 - 2²³ = 1605041 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9993629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4996824 + 4996825.

It is an arithmetic number, because the mean of its divisors is an integer number (4996825).

Almost surely, 2^9993649 is an apocalyptic number.

It is an amenable number.

9993649 is a deficient number, since it is larger than the sum of its proper divisors (1).

9993649 is an equidigital number, since it uses as much as digits as its factorization.

9993649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 472392, while the sum is 49.

The square root of 9993649 is about 3161.2733194079. The cubic root of 9993649 is about 215.3978499619.

The spelling of 9993649 in words is "nine million, nine hundred ninety-three thousand, six hundred forty-nine".