405463813 has 4 divisors (see below), whose sum is σ = 414893248. Its totient is φ = 396034380.

The previous prime is 405463771. The next prime is 405463829. The reversal of 405463813 is 318364504.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 405463813 - 2⁹ = 405463301 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 (405463843) 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, 4714653 + ... + 4714738.

It is an arithmetic number, because the mean of its divisors is an integer number (103723312).

Almost surely, 2^405463813 is an apocalyptic number.

405463813 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

It is an amenable number.

405463813 is a deficient number, since it is larger than the sum of its proper divisors (9429435).

405463813 is an equidigital number, since it uses as much as digits as its factorization.

405463813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9429434.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 405463813 is about 20136.1320267821. The cubic root of 405463813 is about 740.1459494206.

The spelling of 405463813 in words is "four hundred five million, four hundred sixty-three thousand, eight hundred thirteen".