449428961 has 4 divisors (see below), whose sum is σ = 450216624. Its totient is φ = 448641300.

The previous prime is 449428939. The next prime is 449428999. The reversal of 449428961 is 169824944.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 449428961 - 2¹⁴ = 449412577 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (449428361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 392975 + ... + 394116.

It is an arithmetic number, because the mean of its divisors is an integer number (112554156).

Almost surely, 2^449428961 is an apocalyptic number.

It is an amenable number.

449428961 is a deficient number, since it is larger than the sum of its proper divisors (787663).

449428961 is an equidigital number, since it uses as much as digits as its factorization.

449428961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 787662.

The product of its digits is 497664, while the sum is 47.

The square root of 449428961 is about 21199.7396446277. The cubic root of 449428961 is about 765.9851525412.

The spelling of 449428961 in words is "four hundred forty-nine million, four hundred twenty-eight thousand, nine hundred sixty-one".