400444404404 has 48 divisors (see below), whose sum is σ = 766098611712. Its totient is φ = 181636380000.

The previous prime is 400444404397. The next prime is 400444404407. The reversal of 400444404404 is 404404444004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400444404407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44043899 + ... + 44052989.

It is an arithmetic number, because the mean of its divisors is an integer number (15960387744).

Almost surely, 2^400444404404 is an apocalyptic number.

400444404404 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

400444404404 is a deficient number, since it is larger than the sum of its proper divisors (365654207308).

400444404404 is a wasteful number, since it uses less digits than its factorization.

400444404404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11108 (or 11106 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 32.

Adding to 400444404404 its reverse (404404444004), we get a palindrome (804848848408).

The spelling of 400444404404 in words is "four hundred billion, four hundred forty-four million, four hundred four thousand, four hundred four".