404400440402 has 8 divisors (see below), whose sum is σ = 693257897856. Its totient is φ = 173314474452.

The previous prime is 404400440399. The next prime is 404400440413. The reversal of 404400440402 is 204044004404.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14442872858 + ... + 14442872885.

It is an arithmetic number, because the mean of its divisors is an integer number (86657237232).

Almost surely, 2^404400440402 is an apocalyptic number.

404400440402 is a deficient number, since it is larger than the sum of its proper divisors (288857457454).

404400440402 is a wasteful number, since it uses less digits than its factorization.

404400440402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28885745752.

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

Adding to 404400440402 its reverse (204044004404), we get a palindrome (608444444806).

The spelling of 404400440402 in words is "four hundred four billion, four hundred million, four hundred forty thousand, four hundred two".