449038849919 has 4 divisors (see below), whose sum is σ = 489860563560. Its totient is φ = 408217136280.

The previous prime is 449038849873. The next prime is 449038849927. The reversal of 449038849919 is 919948830944.

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 449038849919 - 2⁸ = 449038849663 is a prime.

It is a super-2 number, since 2×449038849919² (a number of 24 digits) 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 (449038849969) 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, 20410856804 + ... + 20410856825.

It is an arithmetic number, because the mean of its divisors is an integer number (122465140890).

Almost surely, 2^449038849919 is an apocalyptic number.

449038849919 is a deficient number, since it is larger than the sum of its proper divisors (40821713641).

449038849919 is a wasteful number, since it uses less digits than its factorization.

449038849919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40821713640.

The product of its (nonzero) digits is 80621568, while the sum is 68.

The spelling of 449038849919 in words is "four hundred forty-nine billion, thirty-eight million, eight hundred forty-nine thousand, nine hundred nineteen".