850445397 has 12 divisors (see below), whose sum is σ = 1229616960. Its totient is φ = 566411688.

The previous prime is 850445389. The next prime is 850445419. The reversal of 850445397 is 793544058.

850445397 is a `hidden beast` number, since 8 + 504 + 4 + 53 + 97 = 666.

It is not a de Polignac number, because 850445397 - 2³ = 850445389 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870445397) 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 in 11 ways as a sum of consecutive naturals, for example, 36123 + ... + 54824.

It is an arithmetic number, because the mean of its divisors is an integer number (102468080).

Almost surely, 2^850445397 is an apocalyptic number.

It is an amenable number.

850445397 is a deficient number, since it is larger than the sum of its proper divisors (379171563).

850445397 is a wasteful number, since it uses less digits than its factorization.

850445397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91992 (or 91989 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The square root of 850445397 is about 29162.3969693851. The cubic root of 850445397 is about 947.4336633660.

The spelling of 850445397 in words is "eight hundred fifty million, four hundred forty-five thousand, three hundred ninety-seven".