850044121 has 4 divisors (see below), whose sum is σ = 852452532. Its totient is φ = 847635712.

The previous prime is 850044119. The next prime is 850044127. The reversal of 850044121 is 121440058.

850044121 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 can be written as a sum of positive squares in 2 ways, for example, as 159668496 + 690375625 = 12636^2 + 26275^2 .

It is a cyclic number.

It is not a de Polignac number, because 850044121 - 2¹ = 850044119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (850044127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1203676 + ... + 1204381.

It is an arithmetic number, because the mean of its divisors is an integer number (213113133).

Almost surely, 2^850044121 is an apocalyptic number.

It is an amenable number.

850044121 is a deficient number, since it is larger than the sum of its proper divisors (2408411).

850044121 is a wasteful number, since it uses less digits than its factorization.

850044121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2408410.

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 850044121 is about 29155.5161333152. The cubic root of 850044121 is about 947.2846268717.

Adding to 850044121 its reverse (121440058), we get a palindrome (971484179).

The spelling of 850044121 in words is "eight hundred fifty million, forty-four thousand, one hundred twenty-one".