449618919 has 8 divisors (see below), whose sum is σ = 599731440. Its totient is φ = 299626176.

The previous prime is 449618903. The next prime is 449618933. The reversal of 449618919 is 919816944.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 449618919 - 2⁴ = 449618903 is a prime.

It is a super-2 number, since 2×449618919² = 404314344645457122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449613919) 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 7 ways as a sum of consecutive naturals, for example, 20784 + ... + 36485.

It is an arithmetic number, because the mean of its divisors is an integer number (74966430).

Almost surely, 2^449618919 is an apocalyptic number.

449618919 is a deficient number, since it is larger than the sum of its proper divisors (150112521).

449618919 is a wasteful number, since it uses less digits than its factorization.

449618919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59889.

The product of its digits is 559872, while the sum is 51.

The square root of 449618919 is about 21204.2193678522. The cubic root of 449618919 is about 766.0930557733.

The spelling of 449618919 in words is "four hundred forty-nine million, six hundred eighteen thousand, nine hundred nineteen".