129571933 has 2 divisors, whose sum is σ = 129571934. Its totient is φ = 129571932.

The previous prime is 129571907. The next prime is 129571951. The reversal of 129571933 is 339175921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120165444 + 9406489 = 10962^2 + 3067^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129571933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129571993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64785966 + 64785967.

It is an arithmetic number, because the mean of its divisors is an integer number (64785967).

Almost surely, 2^129571933 is an apocalyptic number.

It is an amenable number.

129571933 is a deficient number, since it is larger than the sum of its proper divisors (1).

129571933 is an equidigital number, since it uses as much as digits as its factorization.

129571933 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51030, while the sum is 40.

The square root of 129571933 is about 11382.9667925370. The cubic root of 129571933 is about 506.0230647154.

The spelling of 129571933 in words is "one hundred twenty-nine million, five hundred seventy-one thousand, nine hundred thirty-three".