449146889 has 2 divisors, whose sum is σ = 449146890. Its totient is φ = 449146888.

The previous prime is 449146883. The next prime is 449146891. The reversal of 449146889 is 988641944.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 419553289 + 29593600 = 20483^2 + 5440^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-449146889 is a prime.

Together with 449146891, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 449146889.

It is not a weakly prime, because it can be changed into another prime (449146883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224573444 + 224573445.

It is an arithmetic number, because the mean of its divisors is an integer number (224573445).

Almost surely, 2^449146889 is an apocalyptic number.

It is an amenable number.

449146889 is a deficient number, since it is larger than the sum of its proper divisors (1).

449146889 is an equidigital number, since it uses as much as digits as its factorization.

449146889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1990656, while the sum is 53.

The square root of 449146889 is about 21193.0858772384. The cubic root of 449146889 is about 765.8248690107.

The spelling of 449146889 in words is "four hundred forty-nine million, one hundred forty-six thousand, eight hundred eighty-nine".