4689689449 has 2 divisors, whose sum is σ = 4689689450. Its totient is φ = 4689689448.

The previous prime is 4689689423. The next prime is 4689689461. The reversal of 4689689449 is 9449869864.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2920645849 + 1769043600 = 54043^2 + 42060^2 .

It is a cyclic number.

It is not a de Polignac number, because 4689689449 - 2²¹ = 4687592297 is a prime.

It is not a weakly prime, because it can be changed into another prime (4689689149) 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, 2344844724 + 2344844725.

It is an arithmetic number, because the mean of its divisors is an integer number (2344844725).

Almost surely, 2^4689689449 is an apocalyptic number.

It is an amenable number.

4689689449 is a deficient number, since it is larger than the sum of its proper divisors (1).

4689689449 is an equidigital number, since it uses as much as digits as its factorization.

4689689449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 107495424, while the sum is 67.

The square root of 4689689449 is about 68481.3072962250. The cubic root of 4689689449 is about 1673.8429016344.

The spelling of 4689689449 in words is "four billion, six hundred eighty-nine million, six hundred eighty-nine thousand, four hundred forty-nine".