8988731 has 4 divisors (see below), whose sum is σ = 9004632. Its totient is φ = 8972832.

The previous prime is 8988701. The next prime is 8988751. The reversal of 8988731 is 1378898.

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 8988731 - 2¹⁸ = 8726587 is a prime.

It is a super-2 number, since 2×8988731² = 161594569980722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8988701) 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, 7070 + ... + 8243.

It is an arithmetic number, because the mean of its divisors is an integer number (2251158).

Almost surely, 2^8988731 is an apocalyptic number.

8988731 is a deficient number, since it is larger than the sum of its proper divisors (15901).

8988731 is a wasteful number, since it uses less digits than its factorization.

8988731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15900.

The product of its digits is 96768, while the sum is 44.

The square root of 8988731 is about 2998.1212450466. The cubic root of 8988731 is about 207.9215295098.

The spelling of 8988731 in words is "eight million, nine hundred eighty-eight thousand, seven hundred thirty-one".