7949785843 has 4 divisors (see below), whose sum is σ = 7970542848. Its totient is φ = 7929028840.

The previous prime is 7949785829. The next prime is 7949785859. The reversal of 7949785843 is 3485879497.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3485879497 = 37567 ⋅92791.

It is a cyclic number.

It is not a de Polignac number, because 7949785843 - 2²¹ = 7947688691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7949785873) 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, 10377928 + ... + 10378693.

It is an arithmetic number, because the mean of its divisors is an integer number (1992635712).

Almost surely, 2^7949785843 is an apocalyptic number.

7949785843 is a deficient number, since it is larger than the sum of its proper divisors (20757005).

7949785843 is a wasteful number, since it uses less digits than its factorization.

7949785843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20757004.

The product of its digits is 60963840, while the sum is 64.

The square root of 7949785843 is about 89161.5715597252. The cubic root of 7949785843 is about 1995.8067011837.

The spelling of 7949785843 in words is "seven billion, nine hundred forty-nine million, seven hundred eighty-five thousand, eight hundred forty-three".