40404444002 has 16 divisors (see below), whose sum is σ = 65280200832. Its totient is φ = 18644923920.

The previous prime is 40404443999. The next prime is 40404444007. The reversal of 40404444002 is 20044440404.

It is a happy number.

It is a super-2 number, since 2×40404444002² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

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 7 ways as a sum of consecutive naturals, for example, 17177 + ... + 284787.

It is an arithmetic number, because the mean of its divisors is an integer number (4080012552).

Almost surely, 2^40404444002 is an apocalyptic number.

40404444002 is a deficient number, since it is larger than the sum of its proper divisors (24875756830).

40404444002 is a wasteful number, since it uses less digits than its factorization.

40404444002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273433.

The product of its (nonzero) digits is 8192, while the sum is 26.

Adding to 40404444002 its reverse (20044440404), we get a palindrome (60448884406).

The spelling of 40404444002 in words is "forty billion, four hundred four million, four hundred forty-four thousand, two".