129791383 has 2 divisors, whose sum is σ = 129791384. Its totient is φ = 129791382.

The previous prime is 129791381. The next prime is 129791399. The reversal of 129791383 is 383197921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 129791383 - 2¹ = 129791381 is a prime.

Together with 129791381, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129791381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64895691 + 64895692.

It is an arithmetic number, because the mean of its divisors is an integer number (64895692).

Almost surely, 2^129791383 is an apocalyptic number.

129791383 is a deficient number, since it is larger than the sum of its proper divisors (1).

129791383 is an equidigital number, since it uses as much as digits as its factorization.

129791383 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 43.

The square root of 129791383 is about 11392.6021171636. The cubic root of 129791383 is about 506.3085795547.

The spelling of 129791383 in words is "one hundred twenty-nine million, seven hundred ninety-one thousand, three hundred eighty-three".