389677309 has 8 divisors (see below), whose sum is σ = 455702720. Its totient is φ = 326241216.

The previous prime is 389677273. The next prime is 389677313. The reversal of 389677309 is 903776983.

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

It is not a de Polignac number, because 389677309 - 2²³ = 381288701 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 (389677319) 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, 647004 + ... + 647605.

It is an arithmetic number, because the mean of its divisors is an integer number (56962840).

Almost surely, 2^389677309 is an apocalyptic number.

It is an amenable number.

389677309 is a deficient number, since it is larger than the sum of its proper divisors (66025411).

389677309 is a wasteful number, since it uses less digits than its factorization.

389677309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1294659.

The product of its (nonzero) digits is 1714608, while the sum is 52.

The square root of 389677309 is about 19740.2459204540. The cubic root of 389677309 is about 730.4127952423.

The spelling of 389677309 in words is "three hundred eighty-nine million, six hundred seventy-seven thousand, three hundred nine".