863366399 has 32 divisors (see below), whose sum is σ = 1052491776. Its totient is φ = 692530560.

The previous prime is 863366389. The next prime is 863366417. The reversal of 863366399 is 993663368.

It is a cyclic number.

It is not a de Polignac number, because 863366399 - 2¹⁶ = 863300863 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 863366399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863366389) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2352314 + ... + 2352680.

It is an arithmetic number, because the mean of its divisors is an integer number (32890368).

Almost surely, 2^863366399 is an apocalyptic number.

863366399 is a deficient number, since it is larger than the sum of its proper divisors (189125377).

863366399 is a wasteful number, since it uses less digits than its factorization.

863366399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735.

The product of its digits is 3779136, while the sum is 53.

The square root of 863366399 is about 29383.0971648667. The cubic root of 863366399 is about 952.2077550579.

The spelling of 863366399 in words is "eight hundred sixty-three million, three hundred sixty-six thousand, three hundred ninety-nine".