449866642 has 4 divisors (see below), whose sum is σ = 674799966. Its totient is φ = 224933320.

The previous prime is 449866619. The next prime is 449866663. The reversal of 449866642 is 246668944.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 333464121 + 116402521 = 18261^2 + 10789^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112466659 + ... + 112466662.

Almost surely, 2^449866642 is an apocalyptic number.

449866642 is a deficient number, since it is larger than the sum of its proper divisors (224933324).

449866642 is a wasteful number, since it uses less digits than its factorization.

449866642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224933323.

The product of its digits is 1990656, while the sum is 49.

The square root of 449866642 is about 21210.0599244792. The cubic root of 449866642 is about 766.2337260306.

The spelling of 449866642 in words is "four hundred forty-nine million, eight hundred sixty-six thousand, six hundred forty-two".