98903009 has 4 divisors (see below), whose sum is σ = 98922900. Its totient is φ = 98883120.

The previous prime is 98902997. The next prime is 98903033. The reversal of 98903009 is 90030989.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 90030989 = 293 ⋅307273.

It can be written as a sum of positive squares in 2 ways, for example, as 11424400 + 87478609 = 3380^2 + 9353^2 .

It is a cyclic number.

It is not a de Polignac number, because 98903009 - 2²⁰ = 97854433 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (98903069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4967 + ... + 14915.

It is an arithmetic number, because the mean of its divisors is an integer number (24730725).

Almost surely, 2^98903009 is an apocalyptic number.

It is an amenable number.

98903009 is a deficient number, since it is larger than the sum of its proper divisors (19891).

98903009 is an equidigital number, since it uses as much as digits as its factorization.

98903009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19890.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 98903009 is about 9944.9991955756. Note that the first 3 decimals coincide. The cubic root of 98903009 is about 462.4553786024.

The spelling of 98903009 in words is "ninety-eight million, nine hundred three thousand, nine".