850289819 has 2 divisors, whose sum is σ = 850289820. Its totient is φ = 850289818.

The previous prime is 850289813. The next prime is 850289837. The reversal of 850289819 is 918982058.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 850289819 - 2²⁰ = 849241243 is a prime.

It is a super-2 number, since 2×850289819² = 1445985552590105522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (850289813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 425144909 + 425144910.

It is an arithmetic number, because the mean of its divisors is an integer number (425144910).

Almost surely, 2^850289819 is an apocalyptic number.

850289819 is a deficient number, since it is larger than the sum of its proper divisors (1).

850289819 is an equidigital number, since it uses as much as digits as its factorization.

850289819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 414720, while the sum is 50.

The square root of 850289819 is about 29159.7294054660. The cubic root of 850289819 is about 947.3758862592.

The spelling of 850289819 in words is "eight hundred fifty million, two hundred eighty-nine thousand, eight hundred nineteen".