85947219 has 6 divisors (see below), whose sum is σ = 124145996. Its totient is φ = 57298140.

The previous prime is 85947209. The next prime is 85947227. The reversal of 85947219 is 91274958.

It is not a de Polignac number, because 85947219 - 2⁵ = 85947187 is a prime.

It is a super-2 number, since 2×85947219² = 14773848907667922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85947209) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4774837 + ... + 4774854.

Almost surely, 2^85947219 is an apocalyptic number.

85947219 is a deficient number, since it is larger than the sum of its proper divisors (38198777).

85947219 is a wasteful number, since it uses less digits than its factorization.

85947219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9549697 (or 9549694 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 85947219 is about 9270.7722979264. The cubic root of 85947219 is about 441.3101771459.

The spelling of 85947219 in words is "eighty-five million, nine hundred forty-seven thousand, two hundred nineteen".