449479009 has 6 divisors (see below), whose sum is σ = 522863394. Its totient is φ = 385267680.

The previous prime is 449478989. The next prime is 449479021. The reversal of 449479009 is 900974944.

It can be written as a sum of positive squares in only one way, i.e., 301126609 + 148352400 = 17353^2 + 12180^2 .

It is not a de Polignac number, because 449479009 - 2⁷ = 449478881 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 449479009.

It is not an unprimeable number, because it can be changed into a prime (449473009) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4586472 + ... + 4586569.

It is an arithmetic number, because the mean of its divisors is an integer number (87143899).

Almost surely, 2^449479009 is an apocalyptic number.

449479009 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

449479009 is a deficient number, since it is larger than the sum of its proper divisors (73384385).

449479009 is an equidigital number, since it uses as much as digits as its factorization.

449479009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9173055 (or 9173048 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 449479009 is about 21200.9200036225. The cubic root of 449479009 is about 766.0135846223.

It can be divided in two parts, 44947 and 9009, that added together give a triangular number (53956 = T₃₂₈).

The spelling of 449479009 in words is "four hundred forty-nine million, four hundred seventy-nine thousand, nine".