850849 has 2 divisors, whose sum is σ = 850850. Its totient is φ = 850848.

The previous prime is 850823. The next prime is 850853. The reversal of 850849 is 948058.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 664225 + 186624 = 815^2 + 432^2 .

It is a cyclic number.

It is not a de Polignac number, because 850849 - 2⁹ = 850337 is a prime.

It is equal to p₆₇₆₇₈ and since 850849 and 67678 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (850879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 425424 + 425425.

It is an arithmetic number, because the mean of its divisors is an integer number (425425).

2⁸⁵⁰⁸⁴⁹ is an apocalyptic number.

It is an amenable number.

850849 is a deficient number, since it is larger than the sum of its proper divisors (1).

850849 is an equidigital number, since it uses as much as digits as its factorization.

850849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 850849 is about 922.4147657101. The cubic root of 850849 is about 94.7583516841.

The spelling of 850849 in words is "eight hundred fifty thousand, eight hundred forty-nine".