863689404 has 48 divisors (see below), whose sum is σ = 2046746240. Its totient is φ = 283435200.

The previous prime is 863689381. The next prime is 863689417. The reversal of 863689404 is 404986368.

It is a congruent number.

It is an unprimeable number.

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, 211179 + ... + 215229.

Almost surely, 2^863689404 is an apocalyptic number.

It is an amenable number.

863689404 is an abundant number, since it is smaller than the sum of its proper divisors (1183056836).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

863689404 is a wasteful number, since it uses less digits than its factorization.

863689404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4330 (or 4328 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 48.

The square root of 863689404 is about 29388.5930932394. The cubic root of 863689404 is about 952.3264877760.

The spelling of 863689404 in words is "eight hundred sixty-three million, six hundred eighty-nine thousand, four hundred four".