8405234775 has 72 divisors (see below), whose sum is σ = 18217521504. Its totient is φ = 3616358400.

The previous prime is 8405234753. The next prime is 8405234837. The reversal of 8405234775 is 5774325048.

8405234775 is a `hidden beast` number, since 8 + 405 + 234 + 7 + 7 + 5 = 666.

8405234775 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8405234775 - 2⁵ = 8405234743 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 8405234775.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 130186 + ... + 183735.

It is an arithmetic number, because the mean of its divisors is an integer number (253021132).

Almost surely, 2^8405234775 is an apocalyptic number.

8405234775 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

8405234775 is an abundant number, since it is smaller than the sum of its proper divisors (9812286729).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8405234775 is a wasteful number, since it uses less digits than its factorization.

8405234775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313961 (or 313953 counting only the distinct ones).

The product of its (nonzero) digits is 940800, while the sum is 45.

The square root of 8405234775 is about 91680.0674901584. The cubic root of 8405234775 is about 2033.2148962786.

The spelling of 8405234775 in words is "eight billion, four hundred five million, two hundred thirty-four thousand, seven hundred seventy-five".