400304463 has 8 divisors (see below), whose sum is σ = 574796208. Its totient is φ = 246341184.

The previous prime is 400304459. The next prime is 400304497. The reversal of 400304463 is 364403004.

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

It is not a de Polignac number, because 400304463 - 2² = 400304459 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400304413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5132070 + ... + 5132147.

It is an arithmetic number, because the mean of its divisors is an integer number (71849526).

Almost surely, 2^400304463 is an apocalyptic number.

400304463 is a deficient number, since it is larger than the sum of its proper divisors (174491745).

400304463 is a wasteful number, since it uses less digits than its factorization.

400304463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10264233.

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 400304463 is about 20007.6101271491. The cubic root of 400304463 is about 736.9931941977.

Adding to 400304463 its reverse (364403004), we get a palindrome (764707467).

The spelling of 400304463 in words is "four hundred million, three hundred four thousand, four hundred sixty-three".