9977715049 has 2 divisors, whose sum is σ = 9977715050. Its totient is φ = 9977715048.

The previous prime is 9977714959. The next prime is 9977715053. The reversal of 9977715049 is 9405177799.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8582169600 + 1395545449 = 92640^2 + 37357^2 .

It is an emirp because it is prime and its reverse (9405177799) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9977715049 - 2²⁹ = 9440844137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9977714984 and 9977715002.

It is not a weakly prime, because it can be changed into another prime (9977715949) 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 as a sum of consecutive naturals, namely, 4988857524 + 4988857525.

It is an arithmetic number, because the mean of its divisors is an integer number (4988857525).

Almost surely, 2^9977715049 is an apocalyptic number.

It is an amenable number.

9977715049 is a deficient number, since it is larger than the sum of its proper divisors (1).

9977715049 is an equidigital number, since it uses as much as digits as its factorization.

9977715049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5000940, while the sum is 58.

The square root of 9977715049 is about 99888.5130983538. The cubic root of 9977715049 is about 2152.8331173598.

The spelling of 9977715049 in words is "nine billion, nine hundred seventy-seven million, seven hundred fifteen thousand, forty-nine".