98128837 has 4 divisors (see below), whose sum is σ = 101512620. Its totient is φ = 94745056.

The previous prime is 98128831. The next prime is 98128841. The reversal of 98128837 is 73882189.

It is a Cunningham number, because it is equal to 9906²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73882189 = 6373 ⋅11593.

It can be written as a sum of positive squares in 2 ways, for example, as 51466276 + 46662561 = 7174^2 + 6831^2 .

It is a cyclic number.

It is not a de Polignac number, because 98128837 - 2¹¹ = 98126789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98128831) 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, 1691848 + ... + 1691905.

It is an arithmetic number, because the mean of its divisors is an integer number (25378155).

Almost surely, 2^98128837 is an apocalyptic number.

It is an amenable number.

98128837 is a deficient number, since it is larger than the sum of its proper divisors (3383783).

98128837 is a wasteful number, since it uses less digits than its factorization.

98128837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3383782.

The product of its digits is 193536, while the sum is 46.

The square root of 98128837 is about 9906.0000504745. Note that the first 4 decimals coincide. The cubic root of 98128837 is about 461.2455797737.

The spelling of 98128837 in words is "ninety-eight million, one hundred twenty-eight thousand, eight hundred thirty-seven".