1027389085 has 4 divisors (see below), whose sum is σ = 1232866908. Its totient is φ = 821911264.

The previous prime is 1027389049. The next prime is 1027389131. The reversal of 1027389085 is 5809837201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 708730884 + 318658201 = 26622^2 + 17851^2 .

It is a cyclic number.

It is not a de Polignac number, because 1027389085 - 2⁹ = 1027388573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 102738904 + ... + 102738913.

It is an arithmetic number, because the mean of its divisors is an integer number (308216727).

Almost surely, 2^1027389085 is an apocalyptic number.

It is an amenable number.

1027389085 is a deficient number, since it is larger than the sum of its proper divisors (205477823).

1027389085 is an equidigital number, since it uses as much as digits as its factorization.

1027389085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205477822.

The product of its (nonzero) digits is 120960, while the sum is 43.

The square root of 1027389085 is about 32052.9107102616. The cubic root of 1027389085 is about 1009.0475892536.

The spelling of 1027389085 in words is "one billion, twenty-seven million, three hundred eighty-nine thousand, eighty-five".