129896443 has 2 divisors, whose sum is σ = 129896444. Its totient is φ = 129896442.

The previous prime is 129896399. The next prime is 129896447. The reversal of 129896443 is 344698921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 129896443 - 2¹⁷ = 129765371 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 129896393 and 129896402.

It is not a weakly prime, because it can be changed into another prime (129896447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64948221 + 64948222.

It is an arithmetic number, because the mean of its divisors is an integer number (64948222).

Almost surely, 2^129896443 is an apocalyptic number.

129896443 is a deficient number, since it is larger than the sum of its proper divisors (1).

129896443 is an equidigital number, since it uses as much as digits as its factorization.

129896443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 373248, while the sum is 46.

The square root of 129896443 is about 11397.2120713796. The cubic root of 129896443 is about 506.4451536791.

The spelling of 129896443 in words is "one hundred twenty-nine million, eight hundred ninety-six thousand, four hundred forty-three".