85219959 has 32 divisors (see below), whose sum is σ = 131328000. Its totient is φ = 48612960.

The previous prime is 85219949. The next prime is 85219987. The reversal of 85219959 is 95991258.

It is a happy number.

It is not a de Polignac number, because 85219959 - 2⁸ = 85219703 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85219949) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 124432 + ... + 125114.

It is an arithmetic number, because the mean of its divisors is an integer number (4104000).

Almost surely, 2^85219959 is an apocalyptic number.

85219959 is a deficient number, since it is larger than the sum of its proper divisors (46108041).

85219959 is a wasteful number, since it uses less digits than its factorization.

85219959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915.

The product of its digits is 291600, while the sum is 48.

The square root of 85219959 is about 9231.4657016099. The cubic root of 85219959 is about 440.0619041690.

It can be divided in two parts, 852199 and 59, that added together give a palindrome (852258).

The spelling of 85219959 in words is "eighty-five million, two hundred nineteen thousand, nine hundred fifty-nine".