985443205 has 8 divisors (see below), whose sum is σ = 1182737304. Its totient is φ = 788217600.

The previous prime is 985443191. The next prime is 985443209. The reversal of 985443205 is 502344589.

It can be written as a sum of positive squares in 4 ways, for example, as 85803169 + 899640036 = 9263^2 + 29994^2 .

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

It is not a de Polignac number, because 985443205 - 2²¹ = 983346053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985443209) by changing a digit.

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, 23145 + ... + 50065.

It is an arithmetic number, because the mean of its divisors is an integer number (147842163).

Almost surely, 2^985443205 is an apocalyptic number.

It is an amenable number.

985443205 is a deficient number, since it is larger than the sum of its proper divisors (197294099).

985443205 is a wasteful number, since it uses less digits than its factorization.

985443205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34247.

The product of its (nonzero) digits is 172800, while the sum is 40.

The square root of 985443205 is about 31391.7697016272. The cubic root of 985443205 is about 995.1239982499.

The spelling of 985443205 in words is "nine hundred eighty-five million, four hundred forty-three thousand, two hundred five".