449651220479 has 4 divisors (see below), whose sum is σ = 455343008160. Its totient is φ = 443959432800.

The previous prime is 449651220443. The next prime is 449651220517. The reversal of 449651220479 is 974022156944.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 449651220479 - 2¹⁶ = 449651154943 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 449651220479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449651223479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2845893722 + ... + 2845893879.

It is an arithmetic number, because the mean of its divisors is an integer number (113835752040).

Almost surely, 2^449651220479 is an apocalyptic number.

449651220479 is a deficient number, since it is larger than the sum of its proper divisors (5691787681).

449651220479 is an equidigital number, since it uses as much as digits as its factorization.

449651220479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5691787680.

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 449651220479 in words is "four hundred forty-nine billion, six hundred fifty-one million, two hundred twenty thousand, four hundred seventy-nine".