863004445 has 8 divisors (see below), whose sum is σ = 1041592536. Its totient is φ = 686412096.

The previous prime is 863004419. The next prime is 863004479. The reversal of 863004445 is 544400368.

It can be written as a sum of positive squares in 4 ways, for example, as 400840441 + 462164004 = 20021^2 + 21498^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-863004445 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 863004445.

It is a congruent number.

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, 497982 + ... + 499711.

It is an arithmetic number, because the mean of its divisors is an integer number (130199067).

Almost surely, 2^863004445 is an apocalyptic number.

It is an amenable number.

863004445 is a deficient number, since it is larger than the sum of its proper divisors (178588091).

863004445 is a wasteful number, since it uses less digits than its factorization.

863004445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997871.

The product of its (nonzero) digits is 46080, while the sum is 34.

The square root of 863004445 is about 29376.9372978192. The cubic root of 863004445 is about 952.0746699693.

The spelling of 863004445 in words is "eight hundred sixty-three million, four thousand, four hundred forty-five".