449397619 has 4 divisors (see below), whose sum is σ = 490251960. Its totient is φ = 408543280.

The previous prime is 449397617. The next prime is 449397623. The reversal of 449397619 is 916793944.

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 449397619 - 2¹ = 449397617 is a prime.

It is a super-2 number, since 2×449397619² = 403916439925738322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (449397617) 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, 20427154 + ... + 20427175.

It is an arithmetic number, because the mean of its divisors is an integer number (122562990).

Almost surely, 2^449397619 is an apocalyptic number.

449397619 is a deficient number, since it is larger than the sum of its proper divisors (40854341).

449397619 is a wasteful number, since it uses less digits than its factorization.

449397619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40854340.

The product of its digits is 1469664, while the sum is 52.

The square root of 449397619 is about 21199.0004245483. Note that the first 3 decimals coincide. The cubic root of 449397619 is about 765.9673461937.

The spelling of 449397619 in words is "four hundred forty-nine million, three hundred ninety-seven thousand, six hundred nineteen".