850390407 has 24 divisors (see below), whose sum is σ = 1286485200. Its totient is φ = 561297600.

The previous prime is 850390363. The next prime is 850390483. The reversal of 850390407 is 704093058.

It is not a de Polignac number, because 850390407 - 2¹⁰ = 850389383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (850390487) 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 in 23 ways as a sum of consecutive naturals, for example, 7219 + ... + 41867.

It is an arithmetic number, because the mean of its divisors is an integer number (53603550).

Almost surely, 2^850390407 is an apocalyptic number.

850390407 is a deficient number, since it is larger than the sum of its proper divisors (436094793).

850390407 is a wasteful number, since it uses less digits than its factorization.

850390407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34765 (or 34753 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 850390407 is about 29161.4541304099. The cubic root of 850390407 is about 947.4132424978.

The spelling of 850390407 in words is "eight hundred fifty million, three hundred ninety thousand, four hundred seven".