449844193240 has 96 divisors (see below), whose sum is σ = 1103883303600. Its totient is φ = 164901035520.

The previous prime is 449844193237. The next prime is 449844193241. The reversal of 449844193240 is 42391448944.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449844193241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 700270 + ... + 1179010.

Almost surely, 2^449844193240 is an apocalyptic number.

449844193240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 449844193240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (551941651800).

449844193240 is an abundant number, since it is smaller than the sum of its proper divisors (654039110360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

449844193240 is a wasteful number, since it uses less digits than its factorization.

449844193240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478917 (or 478900 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 52.

The spelling of 449844193240 in words is "four hundred forty-nine billion, eight hundred forty-four million, one hundred ninety-three thousand, two hundred forty".