385311839 has 16 divisors (see below), whose sum is σ = 428699040. Its totient is φ = 343388160.

The previous prime is 385311799. The next prime is 385311881. The reversal of 385311839 is 938113583.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 385311839 - 2¹² = 385307743 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 385311796 and 385311805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385311539) 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 15 ways as a sum of consecutive naturals, for example, 114647 + ... + 117959.

It is an arithmetic number, because the mean of its divisors is an integer number (26793690).

Almost surely, 2^385311839 is an apocalyptic number.

385311839 is a deficient number, since it is larger than the sum of its proper divisors (43387201).

385311839 is a wasteful number, since it uses less digits than its factorization.

385311839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3530.

The product of its digits is 77760, while the sum is 41.

The square root of 385311839 is about 19629.3616554385. The cubic root of 385311839 is about 727.6749941766.

The spelling of 385311839 in words is "three hundred eighty-five million, three hundred eleven thousand, eight hundred thirty-nine".