989523174898 has 4 divisors (see below), whose sum is σ = 1484284762350. Its totient is φ = 494761587448.

The previous prime is 989523174869. The next prime is 989523174943. The reversal of 989523174898 is 898471325989.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 898471325989 = 239 ⋅3759294251.

It can be written as a sum of positive squares in only one way, i.e., 534239660889 + 455283514009 = 730917^2 + 674747^2 .

It is a super-2 number, since 2×989523174898² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 989523174898.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247380793723 + ... + 247380793726.

Almost surely, 2^989523174898 is an apocalyptic number.

989523174898 is a deficient number, since it is larger than the sum of its proper divisors (494761587452).

989523174898 is a wasteful number, since it uses less digits than its factorization.

989523174898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494761587451.

The product of its digits is 313528320, while the sum is 73.

The spelling of 989523174898 in words is "nine hundred eighty-nine billion, five hundred twenty-three million, one hundred seventy-four thousand, eight hundred ninety-eight".