988071917 has 6 divisors (see below), whose sum is σ = 1149389838. Its totient is φ = 846918744.

The previous prime is 988071913. The next prime is 988071937. The reversal of 988071917 is 719170889.

It can be written as a sum of positive squares in only one way, i.e., 597851401 + 390220516 = 24451^2 + 19754^2 .

It is not a de Polignac number, because 988071917 - 2² = 988071913 is a prime.

It is a super-2 number, since 2×988071917² = 1952572226328109778, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (988071913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10082318 + ... + 10082415.

It is an arithmetic number, because the mean of its divisors is an integer number (191564973).

Almost surely, 2^988071917 is an apocalyptic number.

It is an amenable number.

988071917 is a deficient number, since it is larger than the sum of its proper divisors (161317921).

988071917 is a wasteful number, since it uses less digits than its factorization.

988071917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20164747 (or 20164740 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 50.

The square root of 988071917 is about 31433.6112624687. The cubic root of 988071917 is about 996.0080579366.

The spelling of 988071917 in words is "nine hundred eighty-eight million, seventy-one thousand, nine hundred seventeen".