659493394949 has 2 divisors, whose sum is σ = 659493394950. Its totient is φ = 659493394948.

The previous prime is 659493394943. The next prime is 659493394961. The reversal of 659493394949 is 949493394956.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 585553996225 + 73939398724 = 765215^2 + 271918^2 .

It is a cyclic number.

It is not a de Polignac number, because 659493394949 - 2¹⁶ = 659493329413 is a prime.

It is a super-3 number, since 3×659493394949³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (659493394943) 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, 329746697474 + 329746697475.

It is an arithmetic number, because the mean of its divisors is an integer number (329746697475).

Almost surely, 2^659493394949 is an apocalyptic number.

It is an amenable number.

659493394949 is a deficient number, since it is larger than the sum of its proper divisors (1).

659493394949 is an equidigital number, since it uses as much as digits as its factorization.

659493394949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1020366720, while the sum is 74.

The spelling of 659493394949 in words is "six hundred fifty-nine billion, four hundred ninety-three million, three hundred ninety-four thousand, nine hundred forty-nine".