129477653 has 2 divisors, whose sum is σ = 129477654. Its totient is φ = 129477652.

The previous prime is 129477619. The next prime is 129477671. The reversal of 129477653 is 356774921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129458884 + 18769 = 11378^2 + 137^2 .

It is an emirp because it is prime and its reverse (356774921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 129477653 - 2⁶ = 129477589 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129477613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64738826 + 64738827.

It is an arithmetic number, because the mean of its divisors is an integer number (64738827).

Almost surely, 2^129477653 is an apocalyptic number.

It is an amenable number.

129477653 is a deficient number, since it is larger than the sum of its proper divisors (1).

129477653 is an equidigital number, since it uses as much as digits as its factorization.

129477653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 317520, while the sum is 44.

The square root of 129477653 is about 11378.8247635685. The cubic root of 129477653 is about 505.9003029689.

The spelling of 129477653 in words is "one hundred twenty-nine million, four hundred seventy-seven thousand, six hundred fifty-three".