85905359 has 2 divisors, whose sum is σ = 85905360. Its totient is φ = 85905358.

The previous prime is 85905349. The next prime is 85905361. The reversal of 85905359 is 95350958.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85905359 - 2⁴ = 85905343 is a prime.

Together with 85905361, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85905319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42952679 + 42952680.

It is an arithmetic number, because the mean of its divisors is an integer number (42952680).

Almost surely, 2^85905359 is an apocalyptic number.

85905359 is a deficient number, since it is larger than the sum of its proper divisors (1).

85905359 is an equidigital number, since it uses as much as digits as its factorization.

85905359 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 243000, while the sum is 44.

The square root of 85905359 is about 9268.5143901275. The cubic root of 85905359 is about 441.2385198189.

The spelling of 85905359 in words is "eighty-five million, nine hundred five thousand, three hundred fifty-nine".