1085443139 has 8 divisors (see below), whose sum is σ = 1184371200. Its totient is φ = 986557000.

The previous prime is 1085443129. The next prime is 1085443141. The reversal of 1085443139 is 9313445801.

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

It is not a de Polignac number, because 1085443139 - 2⁴ = 1085443123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1085443129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71762 + ... + 85560.

It is an arithmetic number, because the mean of its divisors is an integer number (148046400).

Almost surely, 2^1085443139 is an apocalyptic number.

1085443139 is a deficient number, since it is larger than the sum of its proper divisors (98928061).

1085443139 is a wasteful number, since it uses less digits than its factorization.

1085443139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20961.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 1085443139 is about 32946.0640896602. The cubic root of 1085443139 is about 1027.7063168478.

The spelling of 1085443139 in words is "one billion, eighty-five million, four hundred forty-three thousand, one hundred thirty-nine".