389694633 has 4 divisors (see below), whose sum is σ = 519592848. Its totient is φ = 259796420.

The previous prime is 389694631. The next prime is 389694649. The reversal of 389694633 is 336496983.

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 389694633 - 2¹ = 389694631 is a prime.

It is not an unprimeable number, because it can be changed into a prime (389694631) 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, 64949103 + ... + 64949108.

It is an arithmetic number, because the mean of its divisors is an integer number (129898212).

Almost surely, 2^389694633 is an apocalyptic number.

It is an amenable number.

389694633 is a deficient number, since it is larger than the sum of its proper divisors (129898215).

389694633 is a wasteful number, since it uses less digits than its factorization.

389694633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129898214.

The product of its digits is 2519424, while the sum is 51.

The square root of 389694633 is about 19740.6847145685. The cubic root of 389694633 is about 730.4236191415.

The spelling of 389694633 in words is "three hundred eighty-nine million, six hundred ninety-four thousand, six hundred thirty-three".