863826079 has 4 divisors (see below), whose sum is σ = 873532080. Its totient is φ = 854120080.

The previous prime is 863826077. The next prime is 863826137. The reversal of 863826079 is 970628368.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 863826079 - 2¹ = 863826077 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863826071) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4852867 + ... + 4853044.

It is an arithmetic number, because the mean of its divisors is an integer number (218383020).

Almost surely, 2^863826079 is an apocalyptic number.

863826079 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

863826079 is a deficient number, since it is larger than the sum of its proper divisors (9706001).

863826079 is an equidigital number, since it uses as much as digits as its factorization.

863826079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9706000.

The product of its (nonzero) digits is 870912, while the sum is 49.

The square root of 863826079 is about 29390.9183082121. The cubic root of 863826079 is about 952.3767189343.

The spelling of 863826079 in words is "eight hundred sixty-three million, eight hundred twenty-six thousand, seventy-nine".