400044323 has 16 divisors (see below), whose sum is σ = 484989120. Its totient is φ = 322123776.

The previous prime is 400044311. The next prime is 400044331. The reversal of 400044323 is 323440004.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 400044323 - 2¹⁰ = 400043299 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400044295 and 400044304.

It is not an unprimeable number, because it can be changed into a prime (400044353) 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, 67733 + ... + 73401.

It is an arithmetic number, because the mean of its divisors is an integer number (30311820).

Almost surely, 2^400044323 is an apocalyptic number.

400044323 is a deficient number, since it is larger than the sum of its proper divisors (84944797).

400044323 is a wasteful number, since it uses less digits than its factorization.

400044323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6286.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 400044323 is about 20001.1080443059. The cubic root of 400044323 is about 736.8335132776.

Adding to 400044323 its reverse (323440004), we get a palindrome (723484327).

The spelling of 400044323 in words is "four hundred million, forty-four thousand, three hundred twenty-three".