129004747 has 2 divisors, whose sum is σ = 129004748. Its totient is φ = 129004746.

The previous prime is 129004727. The next prime is 129004783. The reversal of 129004747 is 747400921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 129004747 - 2¹⁹ = 128480459 is a prime.

It is equal to p_7324990 and since 129004747 and 7324990 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (129004727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64502373 + 64502374.

It is an arithmetic number, because the mean of its divisors is an integer number (64502374).

Almost surely, 2^129004747 is an apocalyptic number.

129004747 is a deficient number, since it is larger than the sum of its proper divisors (1).

129004747 is an equidigital number, since it uses as much as digits as its factorization.

129004747 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 129004747 is about 11358.0256647007. The cubic root of 129004747 is about 505.2836324536.

The spelling of 129004747 in words is "one hundred twenty-nine million, four thousand, seven hundred forty-seven".