449199945 has 16 divisors (see below), whose sum is σ = 798577920. Its totient is φ = 239573232.

The previous prime is 449199941. The next prime is 449199953. The reversal of 449199945 is 549991944.

449199945 is a `hidden beast` number, since 449 + 199 + 9 + 4 + 5 = 666.

It is not a de Polignac number, because 449199945 - 2² = 449199941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 449199891 and 449199900.

It is not an unprimeable number, because it can be changed into a prime (449199941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1663569 + ... + 1663838.

It is an arithmetic number, because the mean of its divisors is an integer number (49911120).

Almost surely, 2^449199945 is an apocalyptic number.

449199945 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

449199945 is a deficient number, since it is larger than the sum of its proper divisors (349377975).

449199945 is a wasteful number, since it uses less digits than its factorization.

449199945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3327421 (or 3327415 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 54.

The square root of 449199945 is about 21194.3375692660. The cubic root of 449199945 is about 765.8550224753.

The spelling of 449199945 in words is "four hundred forty-nine million, one hundred ninety-nine thousand, nine hundred forty-five".