850136438 has 4 divisors (see below), whose sum is σ = 1275204660. Its totient is φ = 425068218.

The previous prime is 850136431. The next prime is 850136447. The reversal of 850136438 is 834631058.

850136438 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (850136431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212534108 + ... + 212534111.

It is an arithmetic number, because the mean of its divisors is an integer number (318801165).

Almost surely, 2^850136438 is an apocalyptic number.

850136438 is a deficient number, since it is larger than the sum of its proper divisors (425068222).

850136438 is a wasteful number, since it uses less digits than its factorization.

850136438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425068221.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 850136438 is about 29157.0992727329. The cubic root of 850136438 is about 947.3189181542.

The spelling of 850136438 in words is "eight hundred fifty million, one hundred thirty-six thousand, four hundred thirty-eight".