449605789 has 2 divisors, whose sum is σ = 449605790. Its totient is φ = 449605788.

The previous prime is 449605777. The next prime is 449605829. The reversal of 449605789 is 987506944.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 394697689 + 54908100 = 19867^2 + 7410^2 .

It is a cyclic number.

It is not a de Polignac number, because 449605789 - 2⁵ = 449605757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (449605769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224802894 + 224802895.

It is an arithmetic number, because the mean of its divisors is an integer number (224802895).

Almost surely, 2^449605789 is an apocalyptic number.

It is an amenable number.

449605789 is a deficient number, since it is larger than the sum of its proper divisors (1).

449605789 is an equidigital number, since it uses as much as digits as its factorization.

449605789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2177280, while the sum is 52.

The square root of 449605789 is about 21203.9097574009. The cubic root of 449605789 is about 766.0855984212.

The spelling of 449605789 in words is "four hundred forty-nine million, six hundred five thousand, seven hundred eighty-nine".