129955441 has 16 divisors (see below), whose sum is σ = 167251968. Its totient is φ = 97995600.

The previous prime is 129955373. The next prime is 129955447. The reversal of 129955441 is 144559921.

It is a cyclic number.

It is not a de Polignac number, because 129955441 - 2¹⁷ = 129824369 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 129955394 and 129955403.

It is not an unprimeable number, because it can be changed into a prime (129955447) 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, 24835 + ... + 29608.

It is an arithmetic number, because the mean of its divisors is an integer number (10453248).

Almost surely, 2^129955441 is an apocalyptic number.

129955441 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

129955441 is a deficient number, since it is larger than the sum of its proper divisors (37296527).

129955441 is a wasteful number, since it uses less digits than its factorization.

129955441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54492.

The product of its digits is 64800, while the sum is 40.

The square root of 129955441 is about 11399.8000421060. The cubic root of 129955441 is about 506.5218166166.

The spelling of 129955441 in words is "one hundred twenty-nine million, nine hundred fifty-five thousand, four hundred forty-one".