9977741 has 2 divisors, whose sum is σ = 9977742. Its totient is φ = 9977740.

The previous prime is 9977683. The next prime is 9977743. The reversal of 9977741 is 1477799.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9954025 + 23716 = 3155^2 + 154^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9977741 is a prime.

Together with 9977743, it forms a pair of twin primes.

It is a Chen prime.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 9977692 and 9977701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9977743) 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, 4988870 + 4988871.

It is an arithmetic number, because the mean of its divisors is an integer number (4988871).

Almost surely, 2^9977741 is an apocalyptic number.

It is an amenable number.

9977741 is a deficient number, since it is larger than the sum of its proper divisors (1).

9977741 is an equidigital number, since it uses as much as digits as its factorization.

9977741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 111132, while the sum is 44.

The square root of 9977741 is about 3158.7562425740. The cubic root of 9977741 is about 215.2834983790.

The spelling of 9977741 in words is "nine million, nine hundred seventy-seven thousand, seven hundred forty-one".