863449745 has 8 divisors (see below), whose sum is σ = 1037425320. Its totient is φ = 689902720.

The previous prime is 863449729. The next prime is 863449751. The reversal of 863449745 is 547944368.

It can be written as a sum of positive squares in 4 ways, for example, as 240498064 + 622951681 = 15508^2 + 24959^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 863449745 - 2⁴ = 863449729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 863449693 and 863449702.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102686 + ... + 110775.

It is an arithmetic number, because the mean of its divisors is an integer number (129678165).

Almost surely, 2^863449745 is an apocalyptic number.

It is an amenable number.

863449745 is a deficient number, since it is larger than the sum of its proper divisors (173975575).

863449745 is a wasteful number, since it uses less digits than its factorization.

863449745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214275.

The product of its digits is 2903040, while the sum is 50.

The square root of 863449745 is about 29384.5153950172. The cubic root of 863449745 is about 952.2383948704.

The spelling of 863449745 in words is "eight hundred sixty-three million, four hundred forty-nine thousand, seven hundred forty-five".