850646939 has 2 divisors, whose sum is σ = 850646940. Its totient is φ = 850646938.

The previous prime is 850646933. The next prime is 850646971. The reversal of 850646939 is 939646058.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 850646939 - 2¹² = 850642843 is a prime.

It is not a weakly prime, because it can be changed into another prime (850646933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 425323469 + 425323470.

It is an arithmetic number, because the mean of its divisors is an integer number (425323470).

Almost surely, 2^850646939 is an apocalyptic number.

850646939 is a deficient number, since it is larger than the sum of its proper divisors (1).

850646939 is an equidigital number, since it uses as much as digits as its factorization.

850646939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1399680, while the sum is 50.

The square root of 850646939 is about 29165.8522762494. The cubic root of 850646939 is about 947.5084996789.

The spelling of 850646939 in words is "eight hundred fifty million, six hundred forty-six thousand, nine hundred thirty-nine".