129927383 has 2 divisors, whose sum is σ = 129927384. Its totient is φ = 129927382.

The previous prime is 129927367. The next prime is 129927397. The reversal of 129927383 is 383729921.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 129927383 - 2⁴ = 129927367 is a prime.

It is a super-2 number, since 2×129927383² = 33762249706457378, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129927323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64963691 + 64963692.

It is an arithmetic number, because the mean of its divisors is an integer number (64963692).

Almost surely, 2^129927383 is an apocalyptic number.

129927383 is a deficient number, since it is larger than the sum of its proper divisors (1).

129927383 is an equidigital number, since it uses as much as digits as its factorization.

129927383 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 44.

The square root of 129927383 is about 11398.5693400532. The cubic root of 129927383 is about 506.4853605002.

It can be divided in two parts, 1299 and 27383, that added together give a palindrome (28682).

The spelling of 129927383 in words is "one hundred twenty-nine million, nine hundred twenty-seven thousand, three hundred eighty-three".