1230889705 has 8 divisors (see below), whose sum is σ = 1477310472. Its totient is φ = 984549888.

The previous prime is 1230889697. The next prime is 1230889729. The reversal of 1230889705 is 5079880321.

It can be written as a sum of positive squares in 4 ways, for example, as 2247001 + 1228642704 = 1499^2 + 35052^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1230889705 - 2³ = 1230889697 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20779 + ... + 53791.

It is an arithmetic number, because the mean of its divisors is an integer number (184663809).

Almost surely, 2^1230889705 is an apocalyptic number.

It is an amenable number.

1230889705 is a deficient number, since it is larger than the sum of its proper divisors (246420767).

1230889705 is an equidigital number, since it uses as much as digits as its factorization.

1230889705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40475.

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

The square root of 1230889705 is about 35084.0377522314. The cubic root of 1230889705 is about 1071.6995452742.

The spelling of 1230889705 in words is "one billion, two hundred thirty million, eight hundred eighty-nine thousand, seven hundred five".