449777777943 has 32 divisors (see below), whose sum is σ = 647283571200. Its totient is φ = 276165876096.

The previous prime is 449777777909. The next prime is 449777777947. The reversal of 449777777943 is 349777777944.

449777777943 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 449777777943 - 2¹³ = 449777769751 is a prime.

It is a super-2 number, since 2×449777777943² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (75) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449777777947) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 82088478 + ... + 82093956.

It is an arithmetic number, because the mean of its divisors is an integer number (20227611600).

Almost surely, 2^449777777943 is an apocalyptic number.

449777777943 is a deficient number, since it is larger than the sum of its proper divisors (197505793257).

449777777943 is a wasteful number, since it uses less digits than its factorization.

449777777943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9831.

The product of its digits is 1829677248, while the sum is 75.

Subtracting from 449777777943 its reverse (349777777944), we obtain a palindrome (99999999999).

The spelling of 449777777943 in words is "four hundred forty-nine billion, seven hundred seventy-seven million, seven hundred seventy-seven thousand, nine hundred forty-three".