85909448 has 8 divisors (see below), whose sum is σ = 161080230. Its totient is φ = 42954720.

The previous prime is 85909441. The next prime is 85909451. The reversal of 85909448 is 84490958.

It can be written as a sum of positive squares in only one way, i.e., 55681444 + 30228004 = 7462^2 + 5498^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (85909441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5369333 + ... + 5369348.

Almost surely, 2^85909448 is an apocalyptic number.

It is an amenable number.

85909448 is a deficient number, since it is larger than the sum of its proper divisors (75170782).

85909448 is a wasteful number, since it uses less digits than its factorization.

85909448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10738687 (or 10738683 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 47.

The square root of 85909448 is about 9268.7349730155. The cubic root of 85909448 is about 441.2455205296.

The spelling of 85909448 in words is "eighty-five million, nine hundred nine thousand, four hundred forty-eight".