85408445 has 6 divisors (see below), whose sum is σ = 102514938. Its totient is φ = 68310224.

The previous prime is 85408429. The next prime is 85408457. The reversal of 85408445 is 54480458.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 25020004 + 60388441 = 5002^2 + 7771^2 .

It is not a de Polignac number, because 85408445 - 2⁴ = 85408429 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85408399 and 85408408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18599 + ... + 22731.

It is an arithmetic number, because the mean of its divisors is an integer number (17085823).

Almost surely, 2^85408445 is an apocalyptic number.

It is an amenable number.

85408445 is a deficient number, since it is larger than the sum of its proper divisors (17106493).

85408445 is an frugal number, since it uses more digits than its factorization.

85408445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8271 (or 4138 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 38.

The square root of 85408445 is about 9241.6689510066. The cubic root of 85408445 is about 440.3861022100.

The spelling of 85408445 in words is "eighty-five million, four hundred eight thousand, four hundred forty-five".