129379573 has 2 divisors, whose sum is σ = 129379574. Its totient is φ = 129379572.

The previous prime is 129379529. The next prime is 129379583. The reversal of 129379573 is 375973921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109683729 + 19695844 = 10473^2 + 4438^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129379573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129379583) 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, 64689786 + 64689787.

It is an arithmetic number, because the mean of its divisors is an integer number (64689787).

Almost surely, 2^129379573 is an apocalyptic number.

It is an amenable number.

129379573 is a deficient number, since it is larger than the sum of its proper divisors (1).

129379573 is an equidigital number, since it uses as much as digits as its factorization.

129379573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 357210, while the sum is 46.

The square root of 129379573 is about 11374.5141874280. The cubic root of 129379573 is about 505.7725299912.

The spelling of 129379573 in words is "one hundred twenty-nine million, three hundred seventy-nine thousand, five hundred seventy-three".