449082989 has 2 divisors, whose sum is σ = 449082990. Its totient is φ = 449082988.

The previous prime is 449082983. The next prime is 449083003. The reversal of 449082989 is 989280944.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 355322500 + 93760489 = 18850^2 + 9683^2 .

It is a cyclic number.

It is not a de Polignac number, because 449082989 - 2²⁴ = 432305773 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 449082989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (449082983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224541494 + 224541495.

It is an arithmetic number, because the mean of its divisors is an integer number (224541495).

Almost surely, 2^449082989 is an apocalyptic number.

It is an amenable number.

449082989 is a deficient number, since it is larger than the sum of its proper divisors (1).

449082989 is an equidigital number, since it uses as much as digits as its factorization.

449082989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1492992, while the sum is 53.

The square root of 449082989 is about 21191.5782564678. The cubic root of 449082989 is about 765.7885493929.

The spelling of 449082989 in words is "four hundred forty-nine million, eighty-two thousand, nine hundred eighty-nine".