977518849 has 2 divisors, whose sum is σ = 977518850. Its totient is φ = 977518848.

The previous prime is 977518793. The next prime is 977518879. The reversal of 977518849 is 948815779.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 526381249 + 451137600 = 22943^2 + 21240^2 .

It is an emirp because it is prime and its reverse (948815779) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 977518849 - 2⁹ = 977518337 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 977518793 and 977518802.

It is not a weakly prime, because it can be changed into another prime (977518879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488759424 + 488759425.

It is an arithmetic number, because the mean of its divisors is an integer number (488759425).

Almost surely, 2^977518849 is an apocalyptic number.

It is an amenable number.

977518849 is a deficient number, since it is larger than the sum of its proper divisors (1).

977518849 is an equidigital number, since it uses as much as digits as its factorization.

977518849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5080320, while the sum is 58.

The square root of 977518849 is about 31265.2978396176. The cubic root of 977518849 is about 992.4494151582.

The spelling of 977518849 in words is "nine hundred seventy-seven million, five hundred eighteen thousand, eight hundred forty-nine".