988989696 has 144 divisors (see below), whose sum is σ = 3052264320. Its totient is φ = 315279360.

The previous prime is 988989667. The next prime is 988989709. The reversal of 988989696 is 696989889.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 155866 + ... + 162086.

It is an arithmetic number, because the mean of its divisors is an integer number (21196280).

Almost surely, 2^988989696 is an apocalyptic number.

988989696 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 988989696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1526132160).

988989696 is an abundant number, since it is smaller than the sum of its proper divisors (2063274624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

988989696 is a wasteful number, since it uses less digits than its factorization.

988989696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6269 (or 6249 counting only the distinct ones).

The product of its digits is 120932352, while the sum is 72.

The square root of 988989696 is about 31448.2065625371. The cubic root of 988989696 is about 996.3163460216.

The spelling of 988989696 in words is "nine hundred eighty-eight million, nine hundred eighty-nine thousand, six hundred ninety-six".