98915809 has 8 divisors (see below), whose sum is σ = 105404328. Its totient is φ = 92501760.

The previous prime is 98915807. The next prime is 98915827. The reversal of 98915809 is 90851989.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 37638225 + 61277584 = 6135^2 + 7828^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 98915809 - 2¹ = 98915807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (98915807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15862 + ... + 21199.

It is an arithmetic number, because the mean of its divisors is an integer number (13175541).

Almost surely, 2^98915809 is an apocalyptic number.

It is an amenable number.

98915809 is a deficient number, since it is larger than the sum of its proper divisors (6488519).

98915809 is a wasteful number, since it uses less digits than its factorization.

98915809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37235.

The product of its (nonzero) digits is 233280, while the sum is 49.

The square root of 98915809 is about 9945.6427142744. The cubic root of 98915809 is about 462.4753280241.

The spelling of 98915809 in words is "ninety-eight million, nine hundred fifteen thousand, eight hundred nine".