8939404823 has 2 divisors, whose sum is σ = 8939404824. Its totient is φ = 8939404822.

The previous prime is 8939404787. The next prime is 8939404847. The reversal of 8939404823 is 3284049398.

8939404823 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8939404823 - 2²⁰ = 8938356247 is a prime.

It is a super-2 number, since 2×8939404823² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8939404723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4469702411 + 4469702412.

It is an arithmetic number, because the mean of its divisors is an integer number (4469702412).

Almost surely, 2^8939404823 is an apocalyptic number.

8939404823 is a deficient number, since it is larger than the sum of its proper divisors (1).

8939404823 is an equidigital number, since it uses as much as digits as its factorization.

8939404823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1492992, while the sum is 50.

The square root of 8939404823 is about 94548.4258092117. The cubic root of 8939404823 is about 2075.4050458526.

The spelling of 8939404823 in words is "eight billion, nine hundred thirty-nine million, four hundred four thousand, eight hundred twenty-three".