659940829 has 2 divisors, whose sum is σ = 659940830. Its totient is φ = 659940828.

The previous prime is 659940779. The next prime is 659940839. The reversal of 659940829 is 928049956.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 350251225 + 309689604 = 18715^2 + 17598^2 .

It is a cyclic number.

It is not a de Polignac number, because 659940829 - 2¹¹ = 659938781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (659940839) 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, 329970414 + 329970415.

It is an arithmetic number, because the mean of its divisors is an integer number (329970415).

Almost surely, 2^659940829 is an apocalyptic number.

It is an amenable number.

659940829 is a deficient number, since it is larger than the sum of its proper divisors (1).

659940829 is an equidigital number, since it uses as much as digits as its factorization.

659940829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1399680, while the sum is 52.

The square root of 659940829 is about 25689.3135174921. The cubic root of 659940829 is about 870.6327492741.

The spelling of 659940829 in words is "six hundred fifty-nine million, nine hundred forty thousand, eight hundred twenty-nine".