449904215 has 4 divisors (see below), whose sum is σ = 539885064. Its totient is φ = 359923368.

The previous prime is 449904187. The next prime is 449904223. The reversal of 449904215 is 512409944.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 449904215 - 2¹² = 449900119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44990417 + ... + 44990426.

It is an arithmetic number, because the mean of its divisors is an integer number (134971266).

Almost surely, 2^449904215 is an apocalyptic number.

449904215 is a deficient number, since it is larger than the sum of its proper divisors (89980849).

449904215 is an equidigital number, since it uses as much as digits as its factorization.

449904215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89980848.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 449904215 is about 21210.9456413428. The cubic root of 449904215 is about 766.2550574620.

The spelling of 449904215 in words is "four hundred forty-nine million, nine hundred four thousand, two hundred fifteen".