449170777457 has 2 divisors, whose sum is σ = 449170777458. Its totient is φ = 449170777456.

The previous prime is 449170777453. The next prime is 449170777487. The reversal of 449170777457 is 754777071944.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 350522018401 + 98648759056 = 592049^2 + 314084^2 .

It is a cyclic number.

It is not a de Polignac number, because 449170777457 - 2² = 449170777453 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 449170777457.

It is not a weakly prime, because it can be changed into another prime (449170777453) 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, 224585388728 + 224585388729.

It is an arithmetic number, because the mean of its divisors is an integer number (224585388729).

Almost surely, 2^449170777457 is an apocalyptic number.

It is an amenable number.

449170777457 is a deficient number, since it is larger than the sum of its proper divisors (1).

449170777457 is an equidigital number, since it uses as much as digits as its factorization.

449170777457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48404160, while the sum is 62.

The spelling of 449170777457 in words is "four hundred forty-nine billion, one hundred seventy million, seven hundred seventy-seven thousand, four hundred fifty-seven".