386000644 has 6 divisors (see below), whose sum is σ = 675501134. Its totient is φ = 193000320.

The previous prime is 386000621. The next prime is 386000647. The reversal of 386000644 is 446000683.

It can be written as a sum of positive squares in only one way, i.e., 245862400 + 140138244 = 15680^2 + 11838^2 .

It is not an unprimeable number, because it can be changed into a prime (386000647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48250077 + ... + 48250084.

Almost surely, 2^386000644 is an apocalyptic number.

It is an amenable number.

386000644 is a deficient number, since it is larger than the sum of its proper divisors (289500490).

386000644 is a wasteful number, since it uses less digits than its factorization.

386000644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96500165 (or 96500163 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 386000644 is about 19646.8990937501. The cubic root of 386000644 is about 728.1083468939.

The spelling of 386000644 in words is "three hundred eighty-six million, six hundred forty-four", and thus it is an aban number.