85422449 has 4 divisors (see below), whose sum is σ = 97625664. Its totient is φ = 73219236.

The previous prime is 85422439. The next prime is 85422451. The reversal of 85422449 is 94422458.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85422449 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (85422409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6101597 + ... + 6101610.

It is an arithmetic number, because the mean of its divisors is an integer number (24406416).

Almost surely, 2^85422449 is an apocalyptic number.

It is an amenable number.

85422449 is a deficient number, since it is larger than the sum of its proper divisors (12203215).

85422449 is a wasteful number, since it uses less digits than its factorization.

85422449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12203214.

The product of its digits is 92160, while the sum is 38.

The square root of 85422449 is about 9242.4265753102. The cubic root of 85422449 is about 440.4101702044.

Subtracting 85422449 from its reverse (94422458), we obtain a palindrome (9000009).

The spelling of 85422449 in words is "eighty-five million, four hundred twenty-two thousand, four hundred forty-nine".