129094441989 has 32 divisors (see below), whose sum is σ = 174603340800. Its totient is φ = 84835172352.

The previous prime is 129094441979. The next prime is 129094441997. The reversal of 129094441989 is 989144490921.

It is not a de Polignac number, because 129094441989 - 2¹² = 129094437893 is a prime.

It is a super-2 number, since 2×129094441989² (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 (129094441919) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41150629 + ... + 41153765.

It is an arithmetic number, because the mean of its divisors is an integer number (5456354400).

Almost surely, 2^129094441989 is an apocalyptic number.

It is an amenable number.

129094441989 is a deficient number, since it is larger than the sum of its proper divisors (45508898811).

129094441989 is a wasteful number, since it uses less digits than its factorization.

129094441989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3949.

The product of its (nonzero) digits is 6718464, while the sum is 60.

The spelling of 129094441989 in words is "one hundred twenty-nine billion, ninety-four million, four hundred forty-one thousand, nine hundred eighty-nine".