129153769 has 2 divisors, whose sum is σ = 129153770. Its totient is φ = 129153768.

The previous prime is 129153767. The next prime is 129153799. The reversal of 129153769 is 967351921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88360000 + 40793769 = 9400^2 + 6387^2 .

It is a cyclic number.

It is not a de Polignac number, because 129153769 - 2¹ = 129153767 is a prime.

It is a super-2 number, since 2×129153769² = 33361392093810722, which contains 22 as substring.

Together with 129153767, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (129153767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64576884 + 64576885.

It is an arithmetic number, because the mean of its divisors is an integer number (64576885).

Almost surely, 2^129153769 is an apocalyptic number.

It is an amenable number.

129153769 is a deficient number, since it is larger than the sum of its proper divisors (1).

129153769 is an equidigital number, since it uses as much as digits as its factorization.

129153769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 102060, while the sum is 43.

The square root of 129153769 is about 11364.5839783073. The cubic root of 129153769 is about 505.4781198756.

The spelling of 129153769 in words is "one hundred twenty-nine million, one hundred fifty-three thousand, seven hundred sixty-nine".