129569653 has 2 divisors, whose sum is σ = 129569654. Its totient is φ = 129569652.

The previous prime is 129569623. The next prime is 129569659. The reversal of 129569653 is 356965921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104898564 + 24671089 = 10242^2 + 4967^2 .

It is a cyclic number.

It is not a de Polignac number, because 129569653 - 2¹⁷ = 129438581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129569659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64784826 + 64784827.

It is an arithmetic number, because the mean of its divisors is an integer number (64784827).

Almost surely, 2^129569653 is an apocalyptic number.

It is an amenable number.

129569653 is a deficient number, since it is larger than the sum of its proper divisors (1).

129569653 is an equidigital number, since it uses as much as digits as its factorization.

129569653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 437400, while the sum is 46.

The square root of 129569653 is about 11382.8666424587. The cubic root of 129569653 is about 506.0200966360.

The spelling of 129569653 in words is "one hundred twenty-nine million, five hundred sixty-nine thousand, six hundred fifty-three".