385909583 has 4 divisors (see below), whose sum is σ = 399216840. Its totient is φ = 372602328.

The previous prime is 385909567. The next prime is 385909591.

385909583 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 385909583 - 2⁴ = 385909567 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 (385309583) 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, 6653585 + ... + 6653642.

It is an arithmetic number, because the mean of its divisors is an integer number (99804210).

Almost surely, 2^385909583 is an apocalyptic number.

385909583 is a deficient number, since it is larger than the sum of its proper divisors (13307257).

385909583 is a wasteful number, since it uses less digits than its factorization.

385909583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13307256.

The product of its (nonzero) digits is 1166400, while the sum is 50.

The square root of 385909583 is about 19644.5815175585. The cubic root of 385909583 is about 728.0510866366.

The spelling of 385909583 in words is "three hundred eighty-five million, nine hundred nine thousand, five hundred eighty-three".