988843655 has 4 divisors (see below), whose sum is σ = 1186612392. Its totient is φ = 791074920.

The previous prime is 988843651. The next prime is 988843679. The reversal of 988843655 is 556348889.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 556348889 = 79 ⋅7042391.

It is not a de Polignac number, because 988843655 - 2² = 988843651 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 988843655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (988843651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98884361 + ... + 98884370.

It is an arithmetic number, because the mean of its divisors is an integer number (296653098).

Almost surely, 2^988843655 is an apocalyptic number.

988843655 is a deficient number, since it is larger than the sum of its proper divisors (197768737).

988843655 is a wasteful number, since it uses less digits than its factorization.

988843655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197768736.

The product of its digits is 8294400, while the sum is 56.

The square root of 988843655 is about 31445.8845479023. The cubic root of 988843655 is about 996.2673026397.

The spelling of 988843655 in words is "nine hundred eighty-eight million, eight hundred forty-three thousand, six hundred fifty-five".