449919289 has 4 divisors (see below), whose sum is σ = 450443920. Its totient is φ = 449394660.

The previous prime is 449919287. The next prime is 449919313. The reversal of 449919289 is 982919944.

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 449919289 - 2¹ = 449919287 is a prime.

It is a super-2 number, since 2×449919289² = 404854733228531042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (449919287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261027 + ... + 262744.

It is an arithmetic number, because the mean of its divisors is an integer number (112610980).

Almost surely, 2^449919289 is an apocalyptic number.

It is an amenable number.

449919289 is a deficient number, since it is larger than the sum of its proper divisors (524631).

449919289 is an equidigital number, since it uses as much as digits as its factorization.

449919289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524630.

The product of its digits is 1679616, while the sum is 55.

The square root of 449919289 is about 21211.3009737734. The cubic root of 449919289 is about 766.2636151353.

The spelling of 449919289 in words is "four hundred forty-nine million, nine hundred nineteen thousand, two hundred eighty-nine".