450899144 has 8 divisors (see below), whose sum is σ = 845435910. Its totient is φ = 225449568.

The previous prime is 450899117. The next prime is 450899147. The reversal of 450899144 is 441998054.

It can be written as a sum of positive squares in only one way, i.e., 394499044 + 56400100 = 19862^2 + 7510^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 450899095 and 450899104.

It is not an unprimeable number, because it can be changed into a prime (450899147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28181189 + ... + 28181204.

Almost surely, 2^450899144 is an apocalyptic number.

It is an amenable number.

450899144 is a deficient number, since it is larger than the sum of its proper divisors (394536766).

450899144 is a wasteful number, since it uses less digits than its factorization.

450899144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56362399 (or 56362395 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 450899144 is about 21234.3858870465. The cubic root of 450899144 is about 766.8194798940.

The spelling of 450899144 in words is "four hundred fifty million, eight hundred ninety-nine thousand, one hundred forty-four".