9998000501 has 4 divisors (see below), whose sum is σ = 10022445900. Its totient is φ = 9973555104.

The previous prime is 9998000491. The next prime is 9998000533. The reversal of 9998000501 is 1050008999.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6123062500 + 3874938001 = 78250^2 + 62249^2 .

It is a cyclic number.

It is not a de Polignac number, because 9998000501 - 2²⁶ = 9930891637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9998080501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12222086 + ... + 12222903.

It is an arithmetic number, because the mean of its divisors is an integer number (2505611475).

Almost surely, 2^9998000501 is an apocalyptic number.

It is an amenable number.

9998000501 is a deficient number, since it is larger than the sum of its proper divisors (24445399).

9998000501 is a wasteful number, since it uses less digits than its factorization.

9998000501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24445398.

The product of its (nonzero) digits is 29160, while the sum is 41.

The square root of 9998000501 is about 99990.0020052005. The cubic root of 9998000501 is about 2154.2910874601.

The spelling of 9998000501 in words is "nine billion, nine hundred ninety-eight million, five hundred one", and thus it is an aban number.