385327889 has 2 divisors, whose sum is σ = 385327890. Its totient is φ = 385327888.

The previous prime is 385327883. The next prime is 385327907. The reversal of 385327889 is 988723583.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 372490000 + 12837889 = 19300^2 + 3583^2 .

It is a cyclic number.

It is not a de Polignac number, because 385327889 - 2⁸ = 385327633 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 385327889.

It is not a weakly prime, because it can be changed into another prime (385327883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192663944 + 192663945.

It is an arithmetic number, because the mean of its divisors is an integer number (192663945).

Almost surely, 2^385327889 is an apocalyptic number.

It is an amenable number.

385327889 is a deficient number, since it is larger than the sum of its proper divisors (1).

385327889 is an equidigital number, since it uses as much as digits as its factorization.

385327889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2903040, while the sum is 53.

The square root of 385327889 is about 19629.7704775171. The cubic root of 385327889 is about 727.6850977000.

The spelling of 385327889 in words is "three hundred eighty-five million, three hundred twenty-seven thousand, eight hundred eighty-nine".