9843494977 has 4 divisors (see below), whose sum is σ = 10361573680. Its totient is φ = 9325416276.

The previous prime is 9843494971. The next prime is 9843494987. The reversal of 9843494977 is 7794943489.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7794943489 = 103 ⋅75679063.

It is a cyclic number.

It is not a de Polignac number, because 9843494977 - 2⁷ = 9843494849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9843494971) 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, 259039323 + ... + 259039360.

It is an arithmetic number, because the mean of its divisors is an integer number (2590393420).

Almost surely, 2^9843494977 is an apocalyptic number.

It is an amenable number.

9843494977 is a deficient number, since it is larger than the sum of its proper divisors (518078703).

9843494977 is a wasteful number, since it uses less digits than its factorization.

9843494977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518078702.

The product of its digits is 54867456, while the sum is 64.

The square root of 9843494977 is about 99214.3889614808. The cubic root of 9843494977 is about 2143.1362127784.

The spelling of 9843494977 in words is "nine billion, eight hundred forty-three million, four hundred ninety-four thousand, nine hundred seventy-seven".