863459 has 4 divisors (see below), whose sum is σ = 865416. Its totient is φ = 861504.

The previous prime is 863393. The next prime is 863479. The reversal of 863459 is 954368.

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 863459 - 2¹² = 859363 is a prime.

It is a super-2 number, since 2×863459² = 1491122889362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (863479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32 + ... + 1314.

It is an arithmetic number, because the mean of its divisors is an integer number (216354).

2⁸⁶³⁴⁵⁹ is an apocalyptic number.

863459 is a deficient number, since it is larger than the sum of its proper divisors (1957).

863459 is a wasteful number, since it uses less digits than its factorization.

863459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1956.

The product of its digits is 25920, while the sum is 35.

The square root of 863459 is about 929.2249458554. The cubic root of 863459 is about 95.2241797089.

Subtracting 863459 from its reverse (954368), we obtain a palindrome (90909).

The spelling of 863459 in words is "eight hundred sixty-three thousand, four hundred fifty-nine".