85040359 has 2 divisors, whose sum is σ = 85040360. Its totient is φ = 85040358.

The previous prime is 85040357. The next prime is 85040377. The reversal of 85040359 is 95304058.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85040359 - 2¹ = 85040357 is a prime.

Together with 85040357, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85040357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42520179 + 42520180.

It is an arithmetic number, because the mean of its divisors is an integer number (42520180).

Almost surely, 2^85040359 is an apocalyptic number.

85040359 is a deficient number, since it is larger than the sum of its proper divisors (1).

85040359 is an equidigital number, since it uses as much as digits as its factorization.

85040359 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 85040359 is about 9221.7329716274. The cubic root of 85040359 is about 439.7525450867.

It can be divided in two parts, 850 and 40359, that added together give a square (41209 = 203²).

The spelling of 85040359 in words is "eighty-five million, forty thousand, three hundred fifty-nine".