440004121002 has 40 divisors (see below), whose sum is σ = 986518134756. Its totient is φ = 146581316928.

The previous prime is 440004120961. The next prime is 440004121003. The reversal of 440004121002 is 200121400044.

It can be written as a sum of positive squares in 2 ways, for example, as 438547248441 + 1456872561 = 662229^2 + 38169^2 .

It is a super-3 number, since 3×440004121002³ (a number of 36 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (440004121003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 527883 + ... + 1076414.

Almost surely, 2^440004121002 is an apocalyptic number.

440004121002 is an abundant number, since it is smaller than the sum of its proper divisors (546514013754).

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

440004121002 is a wasteful number, since it uses less digits than its factorization.

440004121002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1606004 (or 1605995 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 440004121002 its reverse (200121400044), we get a palindrome (640125521046).

The spelling of 440004121002 in words is "four hundred forty billion, four million, one hundred twenty-one thousand, two".