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40404444004 = 2241246368561
BaseRepresentation
bin100101101000010010…
…101110001101100100
310212021212002102101001
4211220102232031210
51130222014202004
630321143243044
72630155051561
oct455022561544
9125255072331
1040404444004
1116154289891
1279b7449484
133a6babb842
141d541ab868
1510b72771a4
hex9684ae364

40404444004 has 12 divisors (see below), whose sum is σ = 72432357228. Its totient is φ = 19709484800.

The previous prime is 40404443999. The next prime is 40404444007. The reversal of 40404444004 is 40044440404.

It can be written as a sum of positive squares in 2 ways, for example, as 7903565604 + 32500878400 = 88902^2 + 180280^2 .

It is not an unprimeable number, because it can be changed into a prime (40404444007) 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, 123184117 + ... + 123184444.

It is an arithmetic number, because the mean of its divisors is an integer number (6036029769).

Almost surely, 240404444004 is an apocalyptic number.

It is an amenable number.

40404444004 is a deficient number, since it is larger than the sum of its proper divisors (32027913224).

40404444004 is a wasteful number, since it uses less digits than its factorization.

40404444004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246368606 (or 246368604 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 40404444004 its reverse (40044440404), we get a palindrome (80448884408).

The spelling of 40404444004 in words is "forty billion, four hundred four million, four hundred forty-four thousand, four".

Divisors: 1 2 4 41 82 164 246368561 492737122 985474244 10101111001 20202222002 40404444004