85289207 has 4 divisors (see below), whose sum is σ = 85345680. Its totient is φ = 85232736.

The previous prime is 85289189. The next prime is 85289219. The reversal of 85289207 is 70298258.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85289207 - 2²⁰ = 84240631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85289227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25907 + ... + 29012.

It is an arithmetic number, because the mean of its divisors is an integer number (21336420).

Almost surely, 2^85289207 is an apocalyptic number.

85289207 is a deficient number, since it is larger than the sum of its proper divisors (56473).

85289207 is a wasteful number, since it uses less digits than its factorization.

85289207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56472.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 85289207 is about 9235.2155903368. The cubic root of 85289207 is about 440.1810670067.

The spelling of 85289207 in words is "eighty-five million, two hundred eighty-nine thousand, two hundred seven".