400324474943 has 8 divisors (see below), whose sum is σ = 405443131200. Its totient is φ = 395207100288.

The previous prime is 400324474937. The next prime is 400324474951. The reversal of 400324474943 is 349474423004.

It is a Cunningham number, because it is equal to 632712²-1.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 400324474943 - 2¹⁴ = 400324458559 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 400324474894 and 400324474903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400324474343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 316355 + ... + 949067.

It is an arithmetic number, because the mean of its divisors is an integer number (50680391400).

Almost surely, 2^400324474943 is an apocalyptic number.

400324474943 is a deficient number, since it is larger than the sum of its proper divisors (5118656257).

400324474943 is an equidigital number, since it uses as much as digits as its factorization.

400324474943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640801.

The product of its (nonzero) digits is 1161216, while the sum is 44.

Adding to 400324474943 its reverse (349474423004), we get a palindrome (749798897947).

The spelling of 400324474943 in words is "four hundred billion, three hundred twenty-four million, four hundred seventy-four thousand, nine hundred forty-three".