129937853 has 2 divisors, whose sum is σ = 129937854. Its totient is φ = 129937852.

The previous prime is 129937849. The next prime is 129937867. The reversal of 129937853 is 358739921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103999204 + 25938649 = 10198^2 + 5093^2 .

It is a cyclic number.

It is not a de Polignac number, because 129937853 - 2² = 129937849 is a prime.

It is a super-4 number, since 4×129937853⁴ (a number of 34 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 129937798 and 129937807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129937253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64968926 + 64968927.

It is an arithmetic number, because the mean of its divisors is an integer number (64968927).

Almost surely, 2^129937853 is an apocalyptic number.

It is an amenable number.

129937853 is a deficient number, since it is larger than the sum of its proper divisors (1).

129937853 is an equidigital number, since it uses as much as digits as its factorization.

129937853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 408240, while the sum is 47.

The square root of 129937853 is about 11399.0285989640. The cubic root of 129937853 is about 506.4989649182.

The spelling of 129937853 in words is "one hundred twenty-nine million, nine hundred thirty-seven thousand, eight hundred fifty-three".