389680727 has 2 divisors, whose sum is σ = 389680728. Its totient is φ = 389680726.

The previous prime is 389680723. The next prime is 389680793. The reversal of 389680727 is 727086983.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 389680727 - 2² = 389680723 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389680723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194840363 + 194840364.

It is an arithmetic number, because the mean of its divisors is an integer number (194840364).

Almost surely, 2^389680727 is an apocalyptic number.

389680727 is a deficient number, since it is larger than the sum of its proper divisors (1).

389680727 is an equidigital number, since it uses as much as digits as its factorization.

389680727 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1016064, while the sum is 50.

The square root of 389680727 is about 19740.3324946669. The cubic root of 389680727 is about 730.4149308073.

The spelling of 389680727 in words is "three hundred eighty-nine million, six hundred eighty thousand, seven hundred twenty-seven".