449726447 has 4 divisors (see below), whose sum is σ = 473396280. Its totient is φ = 426056616.

The previous prime is 449726423. The next prime is 449726467. The reversal of 449726447 is 744627944.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-449726447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449726467) 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 3 ways as a sum of consecutive naturals, for example, 11834888 + ... + 11834925.

It is an arithmetic number, because the mean of its divisors is an integer number (118349070).

Almost surely, 2^449726447 is an apocalyptic number.

449726447 is a deficient number, since it is larger than the sum of its proper divisors (23669833).

449726447 is a wasteful number, since it uses less digits than its factorization.

449726447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23669832.

The product of its digits is 1354752, while the sum is 47.

The square root of 449726447 is about 21206.7547493717. The cubic root of 449726447 is about 766.1541222191.

The spelling of 449726447 in words is "four hundred forty-nine million, seven hundred twenty-six thousand, four hundred forty-seven".