988565889 has 16 divisors (see below), whose sum is σ = 1354812480. Its totient is φ = 640710720.

The previous prime is 988565857. The next prime is 988565917.

988565889 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 988565889 - 2⁵ = 988565857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (988565819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171547 + ... + 177215.

It is an arithmetic number, because the mean of its divisors is an integer number (84675780).

Almost surely, 2^988565889 is an apocalyptic number.

It is an amenable number.

988565889 is a deficient number, since it is larger than the sum of its proper divisors (366246591).

988565889 is a wasteful number, since it uses less digits than its factorization.

988565889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7280.

The product of its digits is 49766400, while the sum is 66.

The square root of 988565889 is about 31441.4676661253. The cubic root of 988565889 is about 996.1740101368.

The spelling of 988565889 in words is "nine hundred eighty-eight million, five hundred sixty-five thousand, eight hundred eighty-nine".