85272889 has 8 divisors (see below), whose sum is σ = 91977480. Its totient is φ = 78589056.

The previous prime is 85272883. The next prime is 85272949. The reversal of 85272889 is 98827258.

It can be written as a sum of positive squares in 4 ways, for example, as 25674489 + 59598400 = 5067^2 + 7720^2 .

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

It is not a de Polignac number, because 85272889 - 2¹⁵ = 85240121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85272883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3957 + ... + 13645.

It is an arithmetic number, because the mean of its divisors is an integer number (11497185).

Almost surely, 2^85272889 is an apocalyptic number.

It is an amenable number.

85272889 is a deficient number, since it is larger than the sum of its proper divisors (6704591).

85272889 is a wasteful number, since it uses less digits than its factorization.

85272889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10379.

The product of its digits is 645120, while the sum is 49.

The square root of 85272889 is about 9234.3320819646. The cubic root of 85272889 is about 440.1529925956.

The spelling of 85272889 in words is "eighty-five million, two hundred seventy-two thousand, eight hundred eighty-nine".