846853993 has 4 divisors (see below), whose sum is σ = 855238788. Its totient is φ = 838469200.

The previous prime is 846853967. The next prime is 846853999. The reversal of 846853993 is 399358648.

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 343435024 + 503418969 = 18532^2 + 22437^2 .

It is a cyclic number.

It is not a de Polignac number, because 846853993 - 2¹³ = 846845801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (846853999) 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 3 ways as a sum of consecutive naturals, for example, 4192246 + ... + 4192447.

It is an arithmetic number, because the mean of its divisors is an integer number (213809697).

Almost surely, 2^846853993 is an apocalyptic number.

It is an amenable number.

846853993 is a deficient number, since it is larger than the sum of its proper divisors (8384795).

846853993 is a wasteful number, since it uses less digits than its factorization.

846853993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8384794.

The product of its digits is 5598720, while the sum is 55.

The square root of 846853993 is about 29100.7558836536. The cubic root of 846853993 is about 946.0981208201.

The spelling of 846853993 in words is "eight hundred forty-six million, eight hundred fifty-three thousand, nine hundred ninety-three".