129963653 has 2 divisors, whose sum is σ = 129963654. Its totient is φ = 129963652.

The previous prime is 129963577. The next prime is 129963661. The reversal of 129963653 is 356369921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121396324 + 8567329 = 11018^2 + 2927^2 .

It is an emirp because it is prime and its reverse (356369921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 129963653 - 2²⁰ = 128915077 is a prime.

It is a super-2 number, since 2×129963653² = 33781102202208818, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129063653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64981826 + 64981827.

It is an arithmetic number, because the mean of its divisors is an integer number (64981827).

Almost surely, 2^129963653 is an apocalyptic number.

It is an amenable number.

129963653 is a deficient number, since it is larger than the sum of its proper divisors (1).

129963653 is an equidigital number, since it uses as much as digits as its factorization.

129963653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 262440, while the sum is 44.

The square root of 129963653 is about 11400.1602181724. The cubic root of 129963653 is about 506.5324855801.

The spelling of 129963653 in words is "one hundred twenty-nine million, nine hundred sixty-three thousand, six hundred fifty-three".