85298289 has 8 divisors (see below), whose sum is σ = 113823552. Its totient is φ = 56819280.

The previous prime is 85298273. The next prime is 85298341. The reversal of 85298289 is 98289258.

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

It is not a de Polignac number, because 85298289 - 2⁴ = 85298273 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (85298489) 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, 7002 + ... + 14819.

It is an arithmetic number, because the mean of its divisors is an integer number (14227944).

Almost surely, 2^85298289 is an apocalyptic number.

It is an amenable number.

85298289 is a deficient number, since it is larger than the sum of its proper divisors (28525263).

85298289 is a wasteful number, since it uses less digits than its factorization.

85298289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23127.

The product of its digits is 829440, while the sum is 51.

The square root of 85298289 is about 9235.7072820656. The cubic root of 85298289 is about 440.1966906427.

The spelling of 85298289 in words is "eighty-five million, two hundred ninety-eight thousand, two hundred eighty-nine".