400004404446 has 16 divisors (see below), whose sum is σ = 800041861008. Its totient is φ = 133329292800.

The previous prime is 400004404417. The next prime is 400004404529. The reversal of 400004404446 is 644404400004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1218435 + ... + 1511486.

It is an arithmetic number, because the mean of its divisors is an integer number (50002616313).

Almost surely, 2^400004404446 is an apocalyptic number.

400004404446 is an abundant number, since it is smaller than the sum of its proper divisors (400037456562).

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

400004404446 is a wasteful number, since it uses less digits than its factorization.

400004404446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2754347.

The product of its (nonzero) digits is 24576, while the sum is 30.

The spelling of 400004404446 in words is "four hundred billion, four million, four hundred four thousand, four hundred forty-six".