400504463 has 2 divisors, whose sum is σ = 400504464. Its totient is φ = 400504462.

The previous prime is 400504459. The next prime is 400504501. The reversal of 400504463 is 364405004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 400504463 - 2² = 400504459 is a prime.

It is equal to p_21361751 and since 400504463 and 21361751 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400504763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200252231 + 200252232.

It is an arithmetic number, because the mean of its divisors is an integer number (200252232).

Almost surely, 2^400504463 is an apocalyptic number.

400504463 is a deficient number, since it is larger than the sum of its proper divisors (1).

400504463 is an equidigital number, since it uses as much as digits as its factorization.

400504463 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 400504463 is about 20012.6076012098. The cubic root of 400504463 is about 737.1159125380.

Adding to 400504463 its reverse (364405004), we get a palindrome (764909467).

The spelling of 400504463 in words is "four hundred million, five hundred four thousand, four hundred sixty-three".