449330989 has 2 divisors, whose sum is σ = 449330990. Its totient is φ = 449330988.

The previous prime is 449330971. The next prime is 449331023. The reversal of 449330989 is 989033944.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 346146025 + 103184964 = 18605^2 + 10158^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-449330989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (449330909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224665494 + 224665495.

It is an arithmetic number, because the mean of its divisors is an integer number (224665495).

Almost surely, 2^449330989 is an apocalyptic number.

It is an amenable number.

449330989 is a deficient number, since it is larger than the sum of its proper divisors (1).

449330989 is an equidigital number, since it uses as much as digits as its factorization.

449330989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 839808, while the sum is 49.

The square root of 449330989 is about 21197.4288299312. The cubic root of 449330989 is about 765.9294889046.

The spelling of 449330989 in words is "four hundred forty-nine million, three hundred thirty thousand, nine hundred eighty-nine".