385664929 has 6 divisors (see below), whose sum is σ = 417613686. Its totient is φ = 355998240.

The previous prime is 385664927. The next prime is 385664953. The reversal of 385664929 is 929466583.

It can be written as a sum of positive squares in 3 ways, for example, as 28643904 + 357021025 = 5352^2 + 18895^2 .

It is not a de Polignac number, because 385664929 - 2¹ = 385664927 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (385664927) 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 in 5 ways as a sum of consecutive naturals, for example, 1140852 + ... + 1141189.

It is an arithmetic number, because the mean of its divisors is an integer number (69602281).

Almost surely, 2^385664929 is an apocalyptic number.

It is an amenable number.

385664929 is a deficient number, since it is larger than the sum of its proper divisors (31948757).

385664929 is a wasteful number, since it uses less digits than its factorization.

385664929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2282067 (or 2282054 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 52.

The square root of 385664929 is about 19638.3535205984. The cubic root of 385664929 is about 727.8972006206.

The spelling of 385664929 in words is "three hundred eighty-five million, six hundred sixty-four thousand, nine hundred twenty-nine".