988856784 has 30 divisors (see below), whose sum is σ = 2767425986. Its totient is φ = 329618880.

The previous prime is 988856773. The next prime is 988856789. The reversal of 988856784 is 487658889.

It can be written as a sum of positive squares in only one way, i.e., 749226384 + 239630400 = 27372^2 + 15480^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (988856789) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3433387 + ... + 3433674.

Almost surely, 2^988856784 is an apocalyptic number.

It is an amenable number.

988856784 is an abundant number, since it is smaller than the sum of its proper divisors (1778569202).

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

988856784 is a wasteful number, since it uses less digits than its factorization.

988856784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6867075 (or 6867066 counting only the distinct ones).

The product of its digits is 30965760, while the sum is 63.

The square root of 988856784 is about 31446.0933026664. The cubic root of 988856784 is about 996.2717118084.

The spelling of 988856784 in words is "nine hundred eighty-eight million, eight hundred fifty-six thousand, seven hundred eighty-four".