989898131 has 2 divisors, whose sum is σ = 989898132. Its totient is φ = 989898130.

The previous prime is 989898113. The next prime is 989898149. The reversal of 989898131 is 131898989.

It is a happy number.

Together with previous prime (989898113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (989898113) and next prime (989898149).

It is a cyclic number.

It is not a de Polignac number, because 989898131 - 2¹⁴ = 989881747 is a prime.

It is a super-2 number, since 2×989898131² = 1959796619514586322, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (989598131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494949065 + 494949066.

It is an arithmetic number, because the mean of its divisors is an integer number (494949066).

Almost surely, 2^989898131 is an apocalyptic number.

989898131 is a deficient number, since it is larger than the sum of its proper divisors (1).

989898131 is an equidigital number, since it uses as much as digits as its factorization.

989898131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1119744, while the sum is 56.

The square root of 989898131 is about 31462.6465987844. The cubic root of 989898131 is about 996.6213076277.

The spelling of 989898131 in words is "nine hundred eighty-nine million, eight hundred ninety-eight thousand, one hundred thirty-one".