389671487 has 2 divisors, whose sum is σ = 389671488. Its totient is φ = 389671486.

The previous prime is 389671483. The next prime is 389671523. The reversal of 389671487 is 784176983.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 389671487 - 2² = 389671483 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 (389671481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194835743 + 194835744.

It is an arithmetic number, because the mean of its divisors is an integer number (194835744).

Almost surely, 2^389671487 is an apocalyptic number.

389671487 is a deficient number, since it is larger than the sum of its proper divisors (1).

389671487 is an equidigital number, since it uses as much as digits as its factorization.

389671487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2032128, while the sum is 53.

The square root of 389671487 is about 19740.0984546684. The cubic root of 389671487 is about 730.4091576304.

The spelling of 389671487 in words is "three hundred eighty-nine million, six hundred seventy-one thousand, four hundred eighty-seven".