385844939 has 4 divisors (see below), whose sum is σ = 387673800. Its totient is φ = 384016080.

The previous prime is 385844909. The next prime is 385844969. The reversal of 385844939 is 939448583.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (385844909) and next prime (385844969).

It is a cyclic number.

It is not a de Polignac number, because 385844939 - 2¹⁶ = 385779403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (385844909) 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 in 3 ways as a sum of consecutive naturals, for example, 914114 + ... + 914535.

It is an arithmetic number, because the mean of its divisors is an integer number (96918450).

Almost surely, 2^385844939 is an apocalyptic number.

385844939 is a deficient number, since it is larger than the sum of its proper divisors (1828861).

385844939 is a wasteful number, since it uses less digits than its factorization.

385844939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1828860.

The product of its digits is 3732480, while the sum is 53.

The square root of 385844939 is about 19642.9361094517. The cubic root of 385844939 is about 728.0104322409.

The spelling of 385844939 in words is "three hundred eighty-five million, eight hundred forty-four thousand, nine hundred thirty-nine".