863923473 has 12 divisors (see below), whose sum is σ = 1426159488. Its totient is φ = 493670520.

The previous prime is 863923453. The next prime is 863923477. The reversal of 863923473 is 374329368.

863923473 is a `hidden beast` number, since 8 + 639 + 2 + 3 + 4 + 7 + 3 = 666.

It is not a de Polignac number, because 863923473 - 2⁶ = 863923409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (863923477) 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 11 ways as a sum of consecutive naturals, for example, 6856473 + ... + 6856598.

It is an arithmetic number, because the mean of its divisors is an integer number (118846624).

Almost surely, 2^863923473 is an apocalyptic number.

It is an amenable number.

863923473 is a deficient number, since it is larger than the sum of its proper divisors (562236015).

863923473 is a wasteful number, since it uses less digits than its factorization.

863923473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13713084 (or 13713081 counting only the distinct ones).

The product of its digits is 653184, while the sum is 45.

The square root of 863923473 is about 29392.5751338667. The cubic root of 863923473 is about 952.4125102024.

The spelling of 863923473 in words is "eight hundred sixty-three million, nine hundred twenty-three thousand, four hundred seventy-three".