8781407923 has 2 divisors, whose sum is σ = 8781407924. Its totient is φ = 8781407922.

The previous prime is 8781407893. The next prime is 8781407993. The reversal of 8781407923 is 3297041878.

8781407923 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8781407923 - 2¹⁷ = 8781276851 is a prime.

It is a super-2 number, since 2×8781407923² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8781407993) 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, 4390703961 + 4390703962.

It is an arithmetic number, because the mean of its divisors is an integer number (4390703962).

Almost surely, 2^8781407923 is an apocalyptic number.

8781407923 is a deficient number, since it is larger than the sum of its proper divisors (1).

8781407923 is an equidigital number, since it uses as much as digits as its factorization.

8781407923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 677376, while the sum is 49.

The square root of 8781407923 is about 93709.1666967538. The cubic root of 8781407923 is about 2063.1052488432.

The spelling of 8781407923 in words is "eight billion, seven hundred eighty-one million, four hundred seven thousand, nine hundred twenty-three".