99989105129 has 2 divisors, whose sum is σ = 99989105130. Its totient is φ = 99989105128.

The previous prime is 99989105119. The next prime is 99989105147. The reversal of 99989105129 is 92150198999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99399586729 + 589518400 = 315277^2 + 24280^2 .

It is a cyclic number.

It is not a de Polignac number, because 99989105129 - 2²⁴ = 99972327913 is a prime.

It is a super-2 number, since 2×99989105129² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (99989105119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49994552564 + 49994552565.

It is an arithmetic number, because the mean of its divisors is an integer number (49994552565).

Almost surely, 2^99989105129 is an apocalyptic number.

It is an amenable number.

99989105129 is a deficient number, since it is larger than the sum of its proper divisors (1).

99989105129 is an equidigital number, since it uses as much as digits as its factorization.

99989105129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4723920, while the sum is 62.

The spelling of 99989105129 in words is "ninety-nine billion, nine hundred eighty-nine million, one hundred five thousand, one hundred twenty-nine".