385649 has 4 divisors (see below), whose sum is σ = 420720. Its totient is φ = 350580.

The previous prime is 385639. The next prime is 385657. The reversal of 385649 is 946583.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 385649 - 2⁸ = 385393 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (385639) 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, 17519 + ... + 17540.

It is an arithmetic number, because the mean of its divisors is an integer number (105180).

2³⁸⁵⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

385649 is a deficient number, since it is larger than the sum of its proper divisors (35071).

385649 is a wasteful number, since it uses less digits than its factorization.

385649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35070.

The product of its digits is 25920, while the sum is 35.

The square root of 385649 is about 621.0064411904. The cubic root of 385649 is about 72.7887179111.

The spelling of 385649 in words is "three hundred eighty-five thousand, six hundred forty-nine".