1085407289 has 8 divisors (see below), whose sum is σ = 1100853600. Its totient is φ = 1069976736.

The previous prime is 1085407277. The next prime is 1085407291. The reversal of 1085407289 is 9827045801.

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 1085407289 - 2²⁸ = 816971833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1085407259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238574 + ... + 243080.

It is an arithmetic number, because the mean of its divisors is an integer number (137606700).

Almost surely, 2^1085407289 is an apocalyptic number.

It is an amenable number.

1085407289 is a deficient number, since it is larger than the sum of its proper divisors (15446311).

1085407289 is an equidigital number, since it uses as much as digits as its factorization.

1085407289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7879.

The product of its (nonzero) digits is 161280, while the sum is 44.

The square root of 1085407289 is about 32945.5200141081. The cubic root of 1085407289 is about 1027.6950023668.

The spelling of 1085407289 in words is "one billion, eighty-five million, four hundred seven thousand, two hundred eighty-nine".