98910401989 has 16 divisors (see below), whose sum is σ = 121892158080. Its totient is φ = 78359235840.

The previous prime is 98910401987. The next prime is 98910402013.

98910401989 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 98910401989 - 2¹ = 98910401987 is a prime.

It is a super-2 number, since 2×98910401989² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98910401987) 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 15 ways as a sum of consecutive naturals, for example, 9063904 + ... + 9074809.

It is an arithmetic number, because the mean of its divisors is an integer number (7618259880).

Almost surely, 2^98910401989 is an apocalyptic number.

It is an amenable number.

98910401989 is a deficient number, since it is larger than the sum of its proper divisors (22981756091).

98910401989 is a wasteful number, since it uses less digits than its factorization.

98910401989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18138780.

The product of its (nonzero) digits is 1679616, while the sum is 58.

The spelling of 98910401989 in words is "ninety-eight billion, nine hundred ten million, four hundred one thousand, nine hundred eighty-nine".