129089443 has 16 divisors (see below), whose sum is σ = 152720064. Its totient is φ = 106813440.

The previous prime is 129089407. The next prime is 129089459. The reversal of 129089443 is 344980921.

It is a cyclic number.

It is not a de Polignac number, because 129089443 - 2¹⁷ = 128958371 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 129089396 and 129089405.

It is not an unprimeable number, because it can be changed into a prime (129089243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25521 + ... + 30157.

It is an arithmetic number, because the mean of its divisors is an integer number (9545004).

Almost surely, 2^129089443 is an apocalyptic number.

129089443 is a deficient number, since it is larger than the sum of its proper divisors (23630621).

129089443 is an equidigital number, since it uses as much as digits as its factorization.

129089443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4782.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 129089443 is about 11361.7535178334. The cubic root of 129089443 is about 505.3941868876.

The spelling of 129089443 in words is "one hundred twenty-nine million, eighty-nine thousand, four hundred forty-three".