404000040002 has 32 divisors (see below), whose sum is σ = 661212729072. Its totient is φ = 184016093184.

The previous prime is 404000039999. The next prime is 404000040061. The reversal of 404000040002 is 200040000404.

It can be written as a sum of positive squares in 8 ways, for example, as 137404403761 + 266595636241 = 370681^2 + 516329^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 663368 + ... + 1117164.

Almost surely, 2^404000040002 is an apocalyptic number.

404000040002 is a deficient number, since it is larger than the sum of its proper divisors (257212689070).

404000040002 is a wasteful number, since it uses less digits than its factorization.

404000040002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454262.

The product of its (nonzero) digits is 128, while the sum is 14.

Adding to 404000040002 its reverse (200040000404), we get a palindrome (604040040406).

The spelling of 404000040002 in words is "four hundred four billion, forty thousand, two".