98806649 has 2 divisors, whose sum is σ = 98806650. Its totient is φ = 98806648.

The previous prime is 98806639. The next prime is 98806661. The reversal of 98806649 is 94660889.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70023424 + 28783225 = 8368^2 + 5365^2 .

It is a cyclic number.

It is not a de Polignac number, because 98806649 - 2¹² = 98802553 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 98806597 and 98806606.

It is not a weakly prime, because it can be changed into another prime (98806639) 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, 49403324 + 49403325.

It is an arithmetic number, because the mean of its divisors is an integer number (49403325).

Almost surely, 2^98806649 is an apocalyptic number.

It is an amenable number.

98806649 is a deficient number, since it is larger than the sum of its proper divisors (1).

98806649 is an equidigital number, since it uses as much as digits as its factorization.

98806649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 746496, while the sum is 50.

The square root of 98806649 is about 9940.1533690381. The cubic root of 98806649 is about 462.3051415816.

Subtracting from 98806649 its reverse (94660889), we obtain a triangular number (4145760 = T₂₈₇₉).

The spelling of 98806649 in words is "ninety-eight million, eight hundred six thousand, six hundred forty-nine".