863084819 has 2 divisors, whose sum is σ = 863084820. Its totient is φ = 863084818.

The previous prime is 863084797. The next prime is 863084839. The reversal of 863084819 is 918480368.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 863084819 - 2¹² = 863080723 is a prime.

It is a super-2 number, since 2×863084819² = 1489830809576525522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (863084839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431542409 + 431542410.

It is an arithmetic number, because the mean of its divisors is an integer number (431542410).

Almost surely, 2^863084819 is an apocalyptic number.

863084819 is a deficient number, since it is larger than the sum of its proper divisors (1).

863084819 is an equidigital number, since it uses as much as digits as its factorization.

863084819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 331776, while the sum is 47.

The square root of 863084819 is about 29378.3052438360. The cubic root of 863084819 is about 952.1042255043.

The spelling of 863084819 in words is "eight hundred sixty-three million, eighty-four thousand, eight hundred nineteen".