400323404444 has 12 divisors (see below), whose sum is σ = 701164228968. Its totient is φ = 199990767600.

The previous prime is 400323404441. The next prime is 400323404471. The reversal of 400323404444 is 444404323004.

It is a super-4 number, since 4×400323404444⁴ (a number of 48 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 400323404444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400323404441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42728387 + ... + 42737754.

It is an arithmetic number, because the mean of its divisors is an integer number (58430352414).

Almost surely, 2^400323404444 is an apocalyptic number.

It is an amenable number.

400323404444 is a deficient number, since it is larger than the sum of its proper divisors (300840824524).

400323404444 is a wasteful number, since it uses less digits than its factorization.

400323404444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85467316 (or 85467314 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 32.

Adding to 400323404444 its reverse (444404323004), we get a palindrome (844727727448).

The spelling of 400323404444 in words is "four hundred billion, three hundred twenty-three million, four hundred four thousand, four hundred forty-four".