85364239 has 4 divisors (see below), whose sum is σ = 85385880. Its totient is φ = 85342600.

The previous prime is 85364233. The next prime is 85364243. The reversal of 85364239 is 93246358.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93246358 = 2 ⋅46623179.

It is a cyclic number.

It is not a de Polignac number, because 85364239 - 2¹¹ = 85362191 is a prime.

It is a super-3 number, since 3×85364239³ (a number of 25 digits) contains 333 as substring.

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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85364233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3037 + ... + 13414.

It is an arithmetic number, because the mean of its divisors is an integer number (21346470).

Almost surely, 2^85364239 is an apocalyptic number.

85364239 is a deficient number, since it is larger than the sum of its proper divisors (21641).

85364239 is a wasteful number, since it uses less digits than its factorization.

85364239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21640.

The product of its digits is 155520, while the sum is 40.

The square root of 85364239 is about 9239.2769738763. The cubic root of 85364239 is about 440.3101102409.

The spelling of 85364239 in words is "eighty-five million, three hundred sixty-four thousand, two hundred thirty-nine".