988222117 has 4 divisors (see below), whose sum is σ = 1031188320. Its totient is φ = 945255916.

The previous prime is 988222111. The next prime is 988222267. The reversal of 988222117 is 711222889.

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 a de Polignac number, because none of the positive numbers 2^k-988222117 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 988222117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (988222111) 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, 21483067 + ... + 21483112.

It is an arithmetic number, because the mean of its divisors is an integer number (257797080).

Almost surely, 2^988222117 is an apocalyptic number.

It is an amenable number.

988222117 is a deficient number, since it is larger than the sum of its proper divisors (42966203).

988222117 is a wasteful number, since it uses less digits than its factorization.

988222117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42966202.

The product of its digits is 32256, while the sum is 40.

The square root of 988222117 is about 31436.0003340120. Note that the first 3 decimals coincide. The cubic root of 988222117 is about 996.0585241789.

The spelling of 988222117 in words is "nine hundred eighty-eight million, two hundred twenty-two thousand, one hundred seventeen".