449133919 has 4 divisors (see below), whose sum is σ = 483682696. Its totient is φ = 414585144.

The previous prime is 449133917. The next prime is 449133929. The reversal of 449133919 is 919331944.

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 449133919 - 2¹ = 449133917 is a prime.

It is a super-2 number, since 2×449133919² = 403442554392597122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449133917) 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, 17274369 + ... + 17274394.

It is an arithmetic number, because the mean of its divisors is an integer number (120920674).

Almost surely, 2^449133919 is an apocalyptic number.

449133919 is a deficient number, since it is larger than the sum of its proper divisors (34548777).

449133919 is a wasteful number, since it uses less digits than its factorization.

449133919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34548776.

The product of its digits is 104976, while the sum is 43.

The square root of 449133919 is about 21192.7798790060. The cubic root of 449133919 is about 765.8174973732.

The spelling of 449133919 in words is "four hundred forty-nine million, one hundred thirty-three thousand, nine hundred nineteen".