385690923 has 32 divisors (see below), whose sum is σ = 607118400. Its totient is φ = 241532928.

The previous prime is 385690919. The next prime is 385690969. The reversal of 385690923 is 329096583.

It is not a de Polignac number, because 385690923 - 2² = 385690919 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (385690973) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22315 + ... + 35627.

It is an arithmetic number, because the mean of its divisors is an integer number (18972450).

Almost surely, 2^385690923 is an apocalyptic number.

385690923 is a deficient number, since it is larger than the sum of its proper divisors (221427477).

385690923 is a wasteful number, since it uses less digits than its factorization.

385690923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13388 (or 13382 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The square root of 385690923 is about 19639.0153266400. The cubic root of 385690923 is about 727.9135537926.

The spelling of 385690923 in words is "three hundred eighty-five million, six hundred ninety thousand, nine hundred twenty-three".