988242889 has 4 divisors (see below), whose sum is σ = 1022320260. Its totient is φ = 954165520.

The previous prime is 988242869. The next prime is 988242901.

988242889 is nontrivially palindromic in base 10.

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 371217289 + 617025600 = 19267^2 + 24840^2 .

It is a cyclic number.

It is not a de Polignac number, because 988242889 - 2¹³ = 988234697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (988242869) 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, 17038642 + ... + 17038699.

It is an arithmetic number, because the mean of its divisors is an integer number (255580065).

Almost surely, 2^988242889 is an apocalyptic number.

It is an amenable number.

988242889 is a deficient number, since it is larger than the sum of its proper divisors (34077371).

988242889 is a wasteful number, since it uses less digits than its factorization.

988242889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34077370.

The product of its digits is 5308416, while the sum is 58.

The square root of 988242889 is about 31436.3307178176. The cubic root of 988242889 is about 996.0655030360.

The spelling of 988242889 in words is "nine hundred eighty-eight million, two hundred forty-two thousand, eight hundred eighty-nine".