9849507977 has 2 divisors, whose sum is σ = 9849507978. Its totient is φ = 9849507976.

The previous prime is 9849507919. The next prime is 9849508033. The reversal of 9849507977 is 7797059489.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8319446521 + 1530061456 = 91211^2 + 39116^2 .

It is a cyclic number.

It is not a de Polignac number, because 9849507977 - 2¹⁶ = 9849442441 is a prime.

It is not a weakly prime, because it can be changed into another prime (9849507077) 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 as a sum of consecutive naturals, namely, 4924753988 + 4924753989.

It is an arithmetic number, because the mean of its divisors is an integer number (4924753989).

Almost surely, 2^9849507977 is an apocalyptic number.

It is an amenable number.

9849507977 is a deficient number, since it is larger than the sum of its proper divisors (1).

9849507977 is an equidigital number, since it uses as much as digits as its factorization.

9849507977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40007520, while the sum is 65.

The square root of 9849507977 is about 99244.6873993767. The cubic root of 9849507977 is about 2143.5725095403.

The spelling of 9849507977 in words is "nine billion, eight hundred forty-nine million, five hundred seven thousand, nine hundred seventy-seven".