863769478 has 48 divisors (see below), whose sum is σ = 1563411456. Its totient is φ = 354637920.

The previous prime is 863769407. The next prime is 863769481. The reversal of 863769478 is 874967368.

It is a happy number.

863769478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×863769478³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 172275 + ... + 177217.

It is an arithmetic number, because the mean of its divisors is an integer number (32571072).

Almost surely, 2^863769478 is an apocalyptic number.

863769478 is a deficient number, since it is larger than the sum of its proper divisors (699641978).

863769478 is a wasteful number, since it uses less digits than its factorization.

863769478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5029 (or 5016 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 58.

The square root of 863769478 is about 29389.9553929570. The cubic root of 863769478 is about 952.3559174276.

The spelling of 863769478 in words is "eight hundred sixty-three million, seven hundred sixty-nine thousand, four hundred seventy-eight".