863479 has 2 divisors, whose sum is σ = 863480. Its totient is φ = 863478.

The previous prime is 863393. The next prime is 863491. The reversal of 863479 is 974368.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-863479 is a prime.

It is equal to p₆₈₅₉₉ and since 863479 and 68599 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (863179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431739 + 431740.

It is an arithmetic number, because the mean of its divisors is an integer number (431740).

2⁸⁶³⁴⁷⁹ is an apocalyptic number.

863479 is a deficient number, since it is larger than the sum of its proper divisors (1).

863479 is an equidigital number, since it uses as much as digits as its factorization.

863479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 37.

The square root of 863479 is about 929.2357074499. The cubic root of 863479 is about 95.2249149181.

Subtracting 863479 from its reverse (974368), we obtain a square (110889 = 333²).

The spelling of 863479 in words is "eight hundred sixty-three thousand, four hundred seventy-nine".