988344864 has 144 divisors (see below), whose sum is σ = 3040920792. Its totient is φ = 302690304.

The previous prime is 988344839. The next prime is 988344887. The reversal of 988344864 is 468443889.

It can be written as a sum of positive squares in 4 ways, for example, as 471237264 + 517107600 = 21708^2 + 22740^2 .

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

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

It is a self number, because there is not a number n which added to its sum of digits gives 988344864.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1036612 + ... + 1037564.

Almost surely, 2^988344864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 988344864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1520460396).

988344864 is an abundant number, since it is smaller than the sum of its proper divisors (2052575928).

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

988344864 is a wasteful number, since it uses less digits than its factorization.

988344864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1259 (or 1248 counting only the distinct ones).

The product of its digits is 5308416, while the sum is 54.

The square root of 988344864 is about 31437.9526050918. The cubic root of 988344864 is about 996.0997625914.

The spelling of 988344864 in words is "nine hundred eighty-eight million, three hundred forty-four thousand, eight hundred sixty-four".