863534493 has 16 divisors (see below), whose sum is σ = 1286016000. Its totient is φ = 572672160.

The previous prime is 863534491. The next prime is 863534513. The reversal of 863534493 is 394435368.

863534493 is a `hidden beast` number, since 8 + 635 + 3 + 4 + 4 + 9 + 3 = 666.

It is not a de Polignac number, because 863534493 - 2¹ = 863534491 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863534491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78568 + ... + 88881.

It is an arithmetic number, because the mean of its divisors is an integer number (80376000).

Almost surely, 2^863534493 is an apocalyptic number.

It is an amenable number.

863534493 is a deficient number, since it is larger than the sum of its proper divisors (422481507).

863534493 is a wasteful number, since it uses less digits than its factorization.

863534493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167649 (or 167643 counting only the distinct ones).

The product of its digits is 933120, while the sum is 45.

The square root of 863534493 is about 29385.9574116618. The cubic root of 863534493 is about 952.2695480672.

The spelling of 863534493 in words is "eight hundred sixty-three million, five hundred thirty-four thousand, four hundred ninety-three".