98906121 has 6 divisors (see below), whose sum is σ = 142864410. Its totient is φ = 65937408.

The previous prime is 98906117. The next prime is 98906177. The reversal of 98906121 is 12160989.

It can be written as a sum of positive squares in only one way, i.e., 88736400 + 10169721 = 9420^2 + 3189^2 .

It is not a de Polignac number, because 98906121 - 2² = 98906117 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (98906921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5494776 + ... + 5494793.

It is an arithmetic number, because the mean of its divisors is an integer number (23810735).

Almost surely, 2^98906121 is an apocalyptic number.

It is an amenable number.

98906121 is a deficient number, since it is larger than the sum of its proper divisors (43958289).

98906121 is a wasteful number, since it uses less digits than its factorization.

98906121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10989575 (or 10989572 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 98906121 is about 9945.1556548905. The cubic root of 98906121 is about 462.4602289639.

The spelling of 98906121 in words is "ninety-eight million, nine hundred six thousand, one hundred twenty-one".