389893693 has 8 divisors (see below), whose sum is σ = 445836800. Its totient is φ = 334011600.

The previous prime is 389893687. The next prime is 389893697. The reversal of 389893693 is 396398983.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 389893693 - 2¹³ = 389885501 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 (389893697) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 618 + ... + 27931.

It is an arithmetic number, because the mean of its divisors is an integer number (55729600).

Almost surely, 2^389893693 is an apocalyptic number.

It is an amenable number.

389893693 is a deficient number, since it is larger than the sum of its proper divisors (55943107).

389893693 is a wasteful number, since it uses less digits than its factorization.

389893693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30507.

The product of its digits is 7558272, while the sum is 58.

The square root of 389893693 is about 19745.7259425932. The cubic root of 389893693 is about 730.5479672536.

The spelling of 389893693 in words is "three hundred eighty-nine million, eight hundred ninety-three thousand, six hundred ninety-three".