406404463 has 4 divisors (see below), whose sum is σ = 420418440. Its totient is φ = 392390488.

The previous prime is 406404421. The next prime is 406404517. The reversal of 406404463 is 364404604.

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

It is a cyclic number.

It is not a de Polignac number, because 406404463 - 2¹⁷ = 406273391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406404413) 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 3 ways as a sum of consecutive naturals, for example, 7006945 + ... + 7007002.

It is an arithmetic number, because the mean of its divisors is an integer number (105104610).

Almost surely, 2^406404463 is an apocalyptic number.

406404463 is a deficient number, since it is larger than the sum of its proper divisors (14013977).

406404463 is a wasteful number, since it uses less digits than its factorization.

406404463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14013976.

The product of its (nonzero) digits is 27648, while the sum is 31.

The square root of 406404463 is about 20159.4757620331. The cubic root of 406404463 is about 740.7178710603.

The spelling of 406404463 in words is "four hundred six million, four hundred four thousand, four hundred sixty-three".