846735121 has 4 divisors (see below), whose sum is σ = 869619892. Its totient is φ = 823850352.

The previous prime is 846735119. The next prime is 846735139. The reversal of 846735121 is 121537648.

It is the 11880-th star number.

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 684554896 + 162180225 = 26164^2 + 12735^2 .

It is a cyclic number.

It is not a de Polignac number, because 846735121 - 2¹ = 846735119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 22884733 = 846735121 / (8 + 4 + 6 + 7 + 3 + 5 + 1 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (846735101) 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 3 ways as a sum of consecutive naturals, for example, 11442330 + ... + 11442403.

It is an arithmetic number, because the mean of its divisors is an integer number (217404973).

Almost surely, 2^846735121 is an apocalyptic number.

It is an amenable number.

846735121 is a deficient number, since it is larger than the sum of its proper divisors (22884771).

846735121 is a wasteful number, since it uses less digits than its factorization.

846735121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22884770.

The product of its digits is 40320, while the sum is 37.

The square root of 846735121 is about 29098.7133908013. The cubic root of 846735121 is about 946.0538511509.

The spelling of 846735121 in words is "eight hundred forty-six million, seven hundred thirty-five thousand, one hundred twenty-one".