85009297 has 4 divisors (see below), whose sum is σ = 86613300. Its totient is φ = 83405296.

The previous prime is 85009283. The next prime is 85009307. The reversal of 85009297 is 79290058.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79290058 = 2 ⋅39645029.

It can be written as a sum of positive squares in 2 ways, for example, as 44036496 + 40972801 = 6636^2 + 6401^2 .

It is a cyclic number.

It is not a de Polignac number, because 85009297 - 2¹¹ = 85007249 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85009207) 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, 801922 + ... + 802027.

It is an arithmetic number, because the mean of its divisors is an integer number (21653325).

Almost surely, 2^85009297 is an apocalyptic number.

It is an amenable number.

85009297 is a deficient number, since it is larger than the sum of its proper divisors (1604003).

85009297 is a wasteful number, since it uses less digits than its factorization.

85009297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1604002.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 85009297 is about 9220.0486441233. The cubic root of 85009297 is about 439.6989969551.

The spelling of 85009297 in words is "eighty-five million, nine thousand, two hundred ninety-seven".