403444445052 has 72 divisors (see below), whose sum is σ = 1036476535248. Its totient is φ = 122049466880.

The previous prime is 403444445039. The next prime is 403444445081. The reversal of 403444445052 is 250544444304.

It is a self number, because there is not a number n which added to its sum of digits gives 403444445052.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 626758 + ... + 1095314.

It is an arithmetic number, because the mean of its divisors is an integer number (14395507434).

Almost surely, 2^403444445052 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 403444445052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (518238267624).

403444445052 is an abundant number, since it is smaller than the sum of its proper divisors (633032090196).

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

403444445052 is a wasteful number, since it uses less digits than its factorization.

403444445052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469179 (or 469166 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 39.

Adding to 403444445052 its reverse (250544444304), we get a palindrome (653988889356).

The spelling of 403444445052 in words is "four hundred three billion, four hundred forty-four million, four hundred forty-five thousand, fifty-two".