383974785 has 12 divisors (see below), whose sum is σ = 665556372. Its totient is φ = 204786528.

The previous prime is 383974783. The next prime is 383974807. The reversal of 383974785 is 587479383.

383974785 is a `hidden beast` number, since 3 + 83 + 97 + 478 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 92794689 + 291180096 = 9633^2 + 17064^2 .

It is not a de Polignac number, because 383974785 - 2¹ = 383974783 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (383974783) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4266342 + ... + 4266431.

It is an arithmetic number, because the mean of its divisors is an integer number (55463031).

Almost surely, 2^383974785 is an apocalyptic number.

It is an amenable number.

383974785 is a deficient number, since it is larger than the sum of its proper divisors (281581587).

383974785 is a wasteful number, since it uses less digits than its factorization.

383974785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8532784 (or 8532781 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 54.

The square root of 383974785 is about 19595.2745579132. The cubic root of 383974785 is about 726.8323275153.

The spelling of 383974785 in words is "three hundred eighty-three million, nine hundred seventy-four thousand, seven hundred eighty-five".