449393919 has 32 divisors (see below), whose sum is σ = 656189184. Its totient is φ = 271918080.

The previous prime is 449393899. The next prime is 449393927. The reversal of 449393919 is 919393944.

It is not a de Polignac number, because 449393919 - 2⁹ = 449393407 is a prime.

It is a super-2 number, since 2×449393919² = 403909788868357122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449398919) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 797932 + ... + 798494.

It is an arithmetic number, because the mean of its divisors is an integer number (20505912).

Almost surely, 2^449393919 is an apocalyptic number.

449393919 is a deficient number, since it is larger than the sum of its proper divisors (206795265).

449393919 is a wasteful number, since it uses less digits than its factorization.

449393919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887.

The product of its digits is 944784, while the sum is 51.

The square root of 449393919 is about 21198.9131561031. The cubic root of 449393919 is about 765.9652440561.

The spelling of 449393919 in words is "four hundred forty-nine million, three hundred ninety-three thousand, nine hundred nineteen".