98809640 has 16 divisors (see below), whose sum is σ = 222321780. Its totient is φ = 39523840.

The previous prime is 98809603. The next prime is 98809673. The reversal of 98809640 is 4690889.

It can be written as a sum of positive squares in 2 ways, for example, as 98763844 + 45796 = 9938^2 + 214^2 .

It is a junction number, because it is equal to n+sod(n) for n = 98809591 and 98809600.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1235081 + ... + 1235160.

Almost surely, 2^98809640 is an apocalyptic number.

It is an amenable number.

98809640 is an abundant number, since it is smaller than the sum of its proper divisors (123512140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

98809640 is a wasteful number, since it uses less digits than its factorization.

98809640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2470252 (or 2470248 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 98809640 is about 9940.3038182945. The cubic root of 98809640 is about 462.3098063848.

The spelling of 98809640 in words is "ninety-eight million, eight hundred nine thousand, six hundred forty".