389476187 has 2 divisors, whose sum is σ = 389476188. Its totient is φ = 389476186.

The previous prime is 389476163. The next prime is 389476259. The reversal of 389476187 is 781674983.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 389476187 - 2¹⁸ = 389214043 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (389476387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194738093 + 194738094.

It is an arithmetic number, because the mean of its divisors is an integer number (194738094).

Almost surely, 2^389476187 is an apocalyptic number.

389476187 is a deficient number, since it is larger than the sum of its proper divisors (1).

389476187 is an equidigital number, since it uses as much as digits as its factorization.

389476187 is an evil number, because the sum of its binary digits is even.

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

The square root of 389476187 is about 19735.1510508534. The cubic root of 389476187 is about 730.2871123081.

The spelling of 389476187 in words is "three hundred eighty-nine million, four hundred seventy-six thousand, one hundred eighty-seven".