385638929 has 16 divisors (see below), whose sum is σ = 421435392. Its totient is φ = 350759808.

The previous prime is 385638887. The next prime is 385638937. The reversal of 385638929 is 929836583.

It is a cyclic number.

It is not a de Polignac number, because 385638929 - 2¹² = 385634833 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (385638949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 268397 + ... + 269829.

It is an arithmetic number, because the mean of its divisors is an integer number (26339712).

Almost surely, 2^385638929 is an apocalyptic number.

It is an amenable number.

385638929 is a deficient number, since it is larger than the sum of its proper divisors (35796463).

385638929 is a wasteful number, since it uses less digits than its factorization.

385638929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1736.

The product of its digits is 2799360, while the sum is 53.

The square root of 385638929 is about 19637.6915394860. The cubic root of 385638929 is about 727.8808429389.

The spelling of 385638929 in words is "three hundred eighty-five million, six hundred thirty-eight thousand, nine hundred twenty-nine".