400440413323 has 4 divisors (see below), whose sum is σ = 400443102288. Its totient is φ = 400437724360.

The previous prime is 400440413311. The next prime is 400440413333. The reversal of 400440413323 is 323314044004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400440413323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 400440413291 and 400440413300.

It is not an unprimeable number, because it can be changed into a prime (400440413333) 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, 1107136 + ... + 1423597.

It is an arithmetic number, because the mean of its divisors is an integer number (100110775572).

Almost surely, 2^400440413323 is an apocalyptic number.

400440413323 is a deficient number, since it is larger than the sum of its proper divisors (2688965).

400440413323 is a wasteful number, since it uses less digits than its factorization.

400440413323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2688964.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 400440413323 its reverse (323314044004), we get a palindrome (723754457327).

The spelling of 400440413323 in words is "four hundred billion, four hundred forty million, four hundred thirteen thousand, three hundred twenty-three".