85222947 has 8 divisors (see below), whose sum is σ = 116273344. Its totient is φ = 55493928.

The previous prime is 85222931. The next prime is 85222957. The reversal of 85222947 is 74922258.

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

It is not a de Polignac number, because 85222947 - 2⁴ = 85222931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85222957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 330193 + ... + 330450.

It is an arithmetic number, because the mean of its divisors is an integer number (14534168).

Almost surely, 2^85222947 is an apocalyptic number.

85222947 is a deficient number, since it is larger than the sum of its proper divisors (31050397).

85222947 is a wasteful number, since it uses less digits than its factorization.

85222947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660689.

The product of its digits is 80640, while the sum is 39.

The square root of 85222947 is about 9231.6275379805. The cubic root of 85222947 is about 440.0670472897.

The spelling of 85222947 in words is "eighty-five million, two hundred twenty-two thousand, nine hundred forty-seven".