4273405785 has 24 divisors (see below), whose sum is σ = 8080622784. Its totient is φ = 2071954080.

The previous prime is 4273405709. The next prime is 4273405789. The reversal of 4273405785 is 5875043724.

4273405785 is a `hidden beast` number, since 4 + 2 + 73 + 4 + 0 + 578 + 5 = 666.

It is not a de Polignac number, because 4273405785 - 2⁷ = 4273405657 is a prime.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4273405785.

It is not an unprimeable number, because it can be changed into a prime (4273405789) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4316077 + ... + 4317066.

It is an arithmetic number, because the mean of its divisors is an integer number (336692616).

Almost surely, 2^4273405785 is an apocalyptic number.

4273405785 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4273405785 is a deficient number, since it is larger than the sum of its proper divisors (3807216999).

4273405785 is a wasteful number, since it uses less digits than its factorization.

4273405785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8633165 (or 8633162 counting only the distinct ones).

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

The square root of 4273405785 is about 65371.2917495134. The cubic root of 4273405785 is about 1622.7740137699.

The spelling of 4273405785 in words is "four billion, two hundred seventy-three million, four hundred five thousand, seven hundred eighty-five".