973860649 has 2 divisors, whose sum is σ = 973860650. Its totient is φ = 973860648.

The previous prime is 973860647. The next prime is 973860703. The reversal of 973860649 is 946068379.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 715937049 + 257923600 = 26757^2 + 16060^2 .

It is a cyclic number.

It is not a de Polignac number, because 973860649 - 2¹ = 973860647 is a prime.

Together with 973860647, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 973860596 and 973860605.

It is not a weakly prime, because it can be changed into another prime (973860647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 486930324 + 486930325.

It is an arithmetic number, because the mean of its divisors is an integer number (486930325).

Almost surely, 2^973860649 is an apocalyptic number.

It is an amenable number.

973860649 is a deficient number, since it is larger than the sum of its proper divisors (1).

973860649 is an equidigital number, since it uses as much as digits as its factorization.

973860649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1959552, while the sum is 52.

The square root of 973860649 is about 31206.7404417699. The cubic root of 973860649 is about 991.2098425276.

The spelling of 973860649 in words is "nine hundred seventy-three million, eight hundred sixty thousand, six hundred forty-nine".