864517479 has 16 divisors (see below), whose sum is σ = 1330406400. Its totient is φ = 489117600.

The previous prime is 864517453. The next prime is 864517481. The reversal of 864517479 is 974715468.

It is not a de Polignac number, because 864517479 - 2⁷ = 864517351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864513479) 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, 201679 + ... + 205920.

It is an arithmetic number, because the mean of its divisors is an integer number (83150400).

Almost surely, 2^864517479 is an apocalyptic number.

864517479 is a deficient number, since it is larger than the sum of its proper divisors (465888921).

864517479 is a wasteful number, since it uses less digits than its factorization.

864517479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407710.

The product of its digits is 1693440, while the sum is 51.

The square root of 864517479 is about 29402.6780923099. The cubic root of 864517479 is about 952.6307429323.

The spelling of 864517479 in words is "eight hundred sixty-four million, five hundred seventeen thousand, four hundred seventy-nine".