9998876531 has 4 divisors (see below), whose sum is σ = 11427287472. Its totient is φ = 8570465592.

The previous prime is 9998876501. The next prime is 9998876533. The reversal of 9998876531 is 1356788999.

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

It is a cyclic number.

It is not a de Polignac number, because 9998876531 - 2⁶ = 9998876467 is a prime.

It is a super-2 number, since 2×9998876531² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (9998876533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 714205460 + ... + 714205473.

It is an arithmetic number, because the mean of its divisors is an integer number (2856821868).

Almost surely, 2^9998876531 is an apocalyptic number.

9998876531 is a deficient number, since it is larger than the sum of its proper divisors (1428410941).

9998876531 is a wasteful number, since it uses less digits than its factorization.

9998876531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428410940.

The product of its digits is 29393280, while the sum is 65.

The square root of 9998876531 is about 99994.3824972183. The cubic root of 9998876531 is about 2154.3540056574.

The spelling of 9998876531 in words is "nine billion, nine hundred ninety-eight million, eight hundred seventy-six thousand, five hundred thirty-one".