988303889 has 4 divisors (see below), whose sum is σ = 995517924. Its totient is φ = 981089856.

The previous prime is 988303861. The next prime is 988303907.

988303889 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 596580625 + 391723264 = 24425^2 + 19792^2 .

It is a cyclic number.

It is not a de Polignac number, because 988303889 - 2¹⁶ = 988238353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (988305889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3606812 + ... + 3607085.

It is an arithmetic number, because the mean of its divisors is an integer number (248879481).

Almost surely, 2^988303889 is an apocalyptic number.

It is an amenable number.

988303889 is a deficient number, since it is larger than the sum of its proper divisors (7214035).

988303889 is a wasteful number, since it uses less digits than its factorization.

988303889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7214034.

The product of its (nonzero) digits is 2985984, while the sum is 56.

The square root of 988303889 is about 31437.3009178587. The cubic root of 988303889 is about 996.0859968998.

The spelling of 988303889 in words is "nine hundred eighty-eight million, three hundred three thousand, eight hundred eighty-nine".