449029981 has 4 divisors (see below), whose sum is σ = 449142912. Its totient is φ = 448917052.

The previous prime is 449029937. The next prime is 449030011. The reversal of 449029981 is 189920944.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 449029981 - 2¹³ = 449021789 is a prime.

It is a super-2 number, since 2×449029981² = 403255847673720722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449029081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50275 + ... + 58528.

It is an arithmetic number, because the mean of its divisors is an integer number (112285728).

Almost surely, 2^449029981 is an apocalyptic number.

It is an amenable number.

449029981 is a deficient number, since it is larger than the sum of its proper divisors (112931).

449029981 is a wasteful number, since it uses less digits than its factorization.

449029981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112930.

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

The square root of 449029981 is about 21190.3275340425. The cubic root of 449029981 is about 765.7584179787.

It can be divided in two parts, 44 and 9029981, that added together give a square (9030025 = 3005²).

The spelling of 449029981 in words is "four hundred forty-nine million, twenty-nine thousand, nine hundred eighty-one".