850387 has 2 divisors, whose sum is σ = 850388. Its totient is φ = 850386.

The previous prime is 850373. The next prime is 850393. The reversal of 850387 is 783058.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 850387 - 2¹⁹ = 326099 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

850387 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (850337) 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 as a sum of consecutive naturals, namely, 425193 + 425194.

It is an arithmetic number, because the mean of its divisors is an integer number (425194).

2⁸⁵⁰³⁸⁷ is an apocalyptic number.

850387 is a deficient number, since it is larger than the sum of its proper divisors (1).

850387 is an equidigital number, since it uses as much as digits as its factorization.

850387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 850387 is about 922.1643020634. The cubic root of 850387 is about 94.7411977259.

The spelling of 850387 in words is "eight hundred fifty thousand, three hundred eighty-seven".