813888463 has 4 divisors (see below), whose sum is σ = 826036120. Its totient is φ = 801740808.

The previous prime is 813888457. The next prime is 813888487. The reversal of 813888463 is 364888318.

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 813888463 - 2⁵ = 813888431 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 (813888403) 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, 6073728 + ... + 6073861.

It is an arithmetic number, because the mean of its divisors is an integer number (206509030).

Almost surely, 2^813888463 is an apocalyptic number.

813888463 is a deficient number, since it is larger than the sum of its proper divisors (12147657).

813888463 is a wasteful number, since it uses less digits than its factorization.

813888463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12147656.

The product of its digits is 884736, while the sum is 49.

The square root of 813888463 is about 28528.7304834968. The cubic root of 813888463 is about 933.6590204226.

The spelling of 813888463 in words is "eight hundred thirteen million, eight hundred eighty-eight thousand, four hundred sixty-three".