649858229 has 2 divisors, whose sum is σ = 649858230. Its totient is φ = 649858228.

The previous prime is 649858219. The next prime is 649858283. The reversal of 649858229 is 922858946.

649858229 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 598047025 + 51811204 = 24455^2 + 7198^2 .

It is a cyclic number.

It is not a de Polignac number, because 649858229 - 2²⁰ = 648809653 is a prime.

It is a super-3 number, since 3×649858229³ (a number of 27 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (649858219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324929114 + 324929115.

It is an arithmetic number, because the mean of its divisors is an integer number (324929115).

Almost surely, 2^649858229 is an apocalyptic number.

It is an amenable number.

649858229 is a deficient number, since it is larger than the sum of its proper divisors (1).

649858229 is an equidigital number, since it uses as much as digits as its factorization.

649858229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2488320, while the sum is 53.

The square root of 649858229 is about 25492.3170582825. The cubic root of 649858229 is about 866.1761225133.

The spelling of 649858229 in words is "six hundred forty-nine million, eight hundred fifty-eight thousand, two hundred twenty-nine".