850385894 has 4 divisors (see below), whose sum is σ = 1275578844. Its totient is φ = 425192946.

The previous prime is 850385891. The next prime is 850385953. The reversal of 850385894 is 498583058.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 498583058 = 2 ⋅249291529.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (850385891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212596472 + ... + 212596475.

It is an arithmetic number, because the mean of its divisors is an integer number (318894711).

Almost surely, 2^850385894 is an apocalyptic number.

850385894 is a deficient number, since it is larger than the sum of its proper divisors (425192950).

850385894 is a wasteful number, since it uses less digits than its factorization.

850385894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425192949.

The product of its (nonzero) digits is 1382400, while the sum is 50.

The square root of 850385894 is about 29161.3767507640. The cubic root of 850385894 is about 947.4115665290.

The spelling of 850385894 in words is "eight hundred fifty million, three hundred eighty-five thousand, eight hundred ninety-four".