389198717 has 4 divisors (see below), whose sum is σ = 409682880. Its totient is φ = 368714556.

The previous prime is 389198701. The next prime is 389198741. The reversal of 389198717 is 717891983.

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 389198717 - 2⁴ = 389198701 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 (389198767) 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, 10242053 + ... + 10242090.

It is an arithmetic number, because the mean of its divisors is an integer number (102420720).

Almost surely, 2^389198717 is an apocalyptic number.

It is an amenable number.

389198717 is a deficient number, since it is larger than the sum of its proper divisors (20484163).

389198717 is a wasteful number, since it uses less digits than its factorization.

389198717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20484162.

The product of its digits is 762048, while the sum is 53.

The square root of 389198717 is about 19728.1199560424. The cubic root of 389198717 is about 730.1136477844.

The spelling of 389198717 in words is "three hundred eighty-nine million, one hundred ninety-eight thousand, seven hundred seventeen".