385923911 has 4 divisors (see below), whose sum is σ = 386128824. Its totient is φ = 385719000.

The previous prime is 385923907. The next prime is 385923947. The reversal of 385923911 is 119329583.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 119329583 = 8329 ⋅14327.

It is a cyclic number.

It is not a de Polignac number, because 385923911 - 2² = 385923907 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385923311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99605 + ... + 103406.

It is an arithmetic number, because the mean of its divisors is an integer number (96532206).

Almost surely, 2^385923911 is an apocalyptic number.

385923911 is a deficient number, since it is larger than the sum of its proper divisors (204913).

385923911 is a wasteful number, since it uses less digits than its factorization.

385923911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204912.

The product of its digits is 58320, while the sum is 41.

The square root of 385923911 is about 19644.9461948869. The cubic root of 385923911 is about 728.0600968532.

The spelling of 385923911 in words is "three hundred eighty-five million, nine hundred twenty-three thousand, nine hundred eleven".