389917109 has 8 divisors (see below), whose sum is σ = 394867200. Its totient is φ = 384989616.

The previous prime is 389917097. The next prime is 389917127. The reversal of 389917109 is 901719983.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-389917109 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 (389917139) 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, 30524 + ... + 41370.

It is an arithmetic number, because the mean of its divisors is an integer number (49358400).

Almost surely, 2^389917109 is an apocalyptic number.

It is an amenable number.

389917109 is a deficient number, since it is larger than the sum of its proper divisors (4950091).

389917109 is a wasteful number, since it uses less digits than its factorization.

389917109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11299.

The product of its (nonzero) digits is 122472, while the sum is 47.

The square root of 389917109 is about 19746.3188721341. The cubic root of 389917109 is about 730.5625918971.

The spelling of 389917109 in words is "three hundred eighty-nine million, nine hundred seventeen thousand, one hundred nine".