449821099 has 16 divisors (see below), whose sum is σ = 568593088. Its totient is φ = 346280832.

The previous prime is 449821087. The next prime is 449821111. The reversal of 449821099 is 990128944.

It is an interprime number because it is at equal distance from previous prime (449821087) and next prime (449821111).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-449821099 is a prime.

It is a super-2 number, since 2×449821099² = 404678042211135602, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (449821039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63432 + ... + 70165.

It is an arithmetic number, because the mean of its divisors is an integer number (35537068).

Almost surely, 2^449821099 is an apocalyptic number.

449821099 is a deficient number, since it is larger than the sum of its proper divisors (118771989).

449821099 is a wasteful number, since it uses less digits than its factorization.

449821099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133654.

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 449821099 is about 21208.9862794052. The cubic root of 449821099 is about 766.2078681748.

The spelling of 449821099 in words is "four hundred forty-nine million, eight hundred twenty-one thousand, ninety-nine".