85584442 has 4 divisors (see below), whose sum is σ = 128376666. Its totient is φ = 42792220.

The previous prime is 85584437. The next prime is 85584463. The reversal of 85584442 is 24448558.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24448558 = 2 ⋅12224279.

It can be written as a sum of positive squares in only one way, i.e., 47872561 + 37711881 = 6919^2 + 6141^2 .

It is a junction number, because it is equal to n+sod(n) for n = 85584395 and 85584404.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21396109 + ... + 21396112.

Almost surely, 2^85584442 is an apocalyptic number.

85584442 is a deficient number, since it is larger than the sum of its proper divisors (42792224).

85584442 is a wasteful number, since it uses less digits than its factorization.

85584442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42792223.

The product of its digits is 204800, while the sum is 40.

The square root of 85584442 is about 9251.1859780247. The cubic root of 85584442 is about 440.6883886941.

The spelling of 85584442 in words is "eighty-five million, five hundred eighty-four thousand, four hundred forty-two".