449228947 has 2 divisors, whose sum is σ = 449228948. Its totient is φ = 449228946.

The previous prime is 449228909. The next prime is 449228959. The reversal of 449228947 is 749822944.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 449228947 - 2¹⁵ = 449196179 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 449228947.

It is not a weakly prime, because it can be changed into another prime (449228987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224614473 + 224614474.

It is an arithmetic number, because the mean of its divisors is an integer number (224614474).

Almost surely, 2^449228947 is an apocalyptic number.

449228947 is a deficient number, since it is larger than the sum of its proper divisors (1).

449228947 is an equidigital number, since it uses as much as digits as its factorization.

449228947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1161216, while the sum is 49.

The square root of 449228947 is about 21195.0217504017. The cubic root of 449228947 is about 765.8715042593.

The spelling of 449228947 in words is "four hundred forty-nine million, two hundred twenty-eight thousand, nine hundred forty-seven".