988262889 has 4 divisors (see below), whose sum is σ = 1317683856. Its totient is φ = 658841924.

The previous prime is 988262879. The next prime is 988262897.

988262889 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 988262889 - 2¹¹ = 988260841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (988262879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164710479 + ... + 164710484.

It is an arithmetic number, because the mean of its divisors is an integer number (329420964).

Almost surely, 2^988262889 is an apocalyptic number.

It is an amenable number.

988262889 is a deficient number, since it is larger than the sum of its proper divisors (329420967).

988262889 is a wasteful number, since it uses less digits than its factorization.

988262889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329420966.

The product of its digits is 7962624, while the sum is 60.

The square root of 988262889 is about 31436.6488194909. The cubic root of 988262889 is about 996.0722224285.

It can be divided in two parts, 9882 and 62889, that added together give a triangular number (72771 = T₃₈₁).

The spelling of 988262889 in words is "nine hundred eighty-eight million, two hundred sixty-two thousand, eight hundred eighty-nine".