98550809 has 6 divisors (see below), whose sum is σ = 114640794. Its totient is φ = 84472080.

The previous prime is 98550799. The next prime is 98550811. The reversal of 98550809 is 90805589.

It can be written as a sum of positive squares in only one way, i.e., 67190809 + 31360000 = 8197^2 + 5600^2 .

It is not a de Polignac number, because 98550809 - 2¹² = 98546713 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 98550809.

It is not an unprimeable number, because it can be changed into a prime (98550899) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1005572 + ... + 1005669.

It is an arithmetic number, because the mean of its divisors is an integer number (19106799).

Almost surely, 2^98550809 is an apocalyptic number.

It is an amenable number.

98550809 is a deficient number, since it is larger than the sum of its proper divisors (16089985).

98550809 is a wasteful number, since it uses less digits than its factorization.

98550809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2011255 (or 2011248 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 44.

The square root of 98550809 is about 9927.2760110717. The cubic root of 98550809 is about 461.9057812152.

The spelling of 98550809 in words is "ninety-eight million, five hundred fifty thousand, eight hundred nine".