129927613 has 2 divisors, whose sum is σ = 129927614. Its totient is φ = 129927612.

The previous prime is 129927593. The next prime is 129927653. The reversal of 129927613 is 316729921.

It is an a-pointer prime, because the next prime (129927653) can be obtained adding 129927613 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127848249 + 2079364 = 11307^2 + 1442^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129927613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129927653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64963806 + 64963807.

It is an arithmetic number, because the mean of its divisors is an integer number (64963807).

Almost surely, 2^129927613 is an apocalyptic number.

It is an amenable number.

129927613 is a deficient number, since it is larger than the sum of its proper divisors (1).

129927613 is an equidigital number, since it uses as much as digits as its factorization.

129927613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824, while the sum is 40.

The square root of 129927613 is about 11398.5794290341. The cubic root of 129927613 is about 506.4856593635.

The spelling of 129927613 in words is "one hundred twenty-nine million, nine hundred twenty-seven thousand, six hundred thirteen".