98637009 has 32 divisors (see below), whose sum is σ = 145566720. Its totient is φ = 59136000.

The previous prime is 98636983. The next prime is 98637013. The reversal of 98637009 is 90073689.

It is a happy number.

It is not a de Polignac number, because 98637009 - 2⁸ = 98636753 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (98637029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 140359 + ... + 141059.

It is an arithmetic number, because the mean of its divisors is an integer number (4548960).

Almost surely, 2^98637009 is an apocalyptic number.

It is an amenable number.

98637009 is a deficient number, since it is larger than the sum of its proper divisors (46929711).

98637009 is a wasteful number, since it uses less digits than its factorization.

98637009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 98637009 is about 9931.6166357749. The cubic root of 98637009 is about 462.0404145601.

The spelling of 98637009 in words is "ninety-eight million, six hundred thirty-seven thousand, nine".