389867473 has 2 divisors, whose sum is σ = 389867474. Its totient is φ = 389867472.

The previous prime is 389867431. The next prime is 389867509. The reversal of 389867473 is 374768983.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 288422289 + 101445184 = 16983^2 + 10072^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-389867473 is a prime.

It is not a weakly prime, because it can be changed into another prime (389861473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194933736 + 194933737.

It is an arithmetic number, because the mean of its divisors is an integer number (194933737).

Almost surely, 2^389867473 is an apocalyptic number.

It is an amenable number.

389867473 is a deficient number, since it is larger than the sum of its proper divisors (1).

389867473 is an equidigital number, since it uses as much as digits as its factorization.

389867473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6096384, while the sum is 55.

The square root of 389867473 is about 19745.0619902800. The cubic root of 389867473 is about 730.5315906553.

The spelling of 389867473 in words is "three hundred eighty-nine million, eight hundred sixty-seven thousand, four hundred seventy-three".